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Hi,

What is your OS??and what about the memory used?
What is written in the error file?
I wonder if this crash is limited only for the mentioned files and modes or it is not working for all the models?

Cheers

Hi

Thanks for the reply.

I get an error message that indicates the problem lies with Java. But Java did not reply to any of my messages.

I am using Windows 7.

Currently I am doing simulation involving fuel cells, which means I use Weakly COmpressible Navier Stokes mode, or PDE mode that incorporates Navier Stokes and / or Darcy's Law. Meshing is required to solve because it uses finite element method.

It crashes most of the time when I click on the "mesh" button that reveals the meshing density in the models. It is extremely annoying. Once in a while it will not crash but 7 out of 10 times it crashes, and a new error file appears, named in the following form: hs_err_pidxxxxxx

A sample error message is as follows:
#
# An unexpected error has been detected by Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x695dbcaf, pid=6440, tid=6548
#
# Java VM: Java HotSpot(TM) Client VM (10.0-b22 mixed mode windows-x86)
# Problematic frame:
# C [nvoglv32.DLL+0xdbcaf]
#
# If you would like to submit a bug report, please visit:
# java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

--------------- T H R E A D ---------------

Current thread (0x018d8800): JavaThread "J3D-Renderer-1" [_thread_in_native, id=6548, stack(0x0c1e0000,0x0c3e0000)]

siginfo: ExceptionCode=0xc0000005, writing address 0x0098069c

Registers:
EAX=0x00008079, EBX=0x018d88f4, ECX=0x00000028, EDX=0x00002a26
ESP=0x0c3df1f4, EBP=0x0c3df1f8, ESI=0x009766c0, EDI=0x00000028
EIP=0x695dbcaf, EFLAGS=0x00010206

Top of Stack: (sp=0x0c3df1f4)
0x0c3df1f4: 69c14cd0 0c3df210 6991d5fb 00008079
0x0c3df204: 1204fa24 1204fa24 018d88f4 0c3df224
0x0c3df214: 69918f82 00002a26 00000028 1204fa24
0x0c3df224: 0c3df238 695c3e94 00002a26 00000028
0x0c3df234: 1204fa24 6d9ce348 090d667a 00002a26
0x0c3df244: 00000028 1204fa24 018d8800 21468290
0x0c3df254: 0c3df38c 21468290 00000028 00000004
0x0c3df264: 00000000 6d93efed 00000000 1005698c

Instructions: (pc=0x695dbcaf)
0x695dbc9f: cc 55 8b ec 56 64 a1 f0 0b 00 00 8b f0 8b 45 08
0x695dbcaf: 83 86 dc 9f 00 00 01 50 e8 74 25 25 00 83 86 dc


Stack: [0x0c1e0000,0x0c3e0000], sp=0x0c3df1f4, free space=2044k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [nvoglv32.DLL+0xdbcaf]
C [nvoglv32.DLL+0x41d5fb]
C [nvoglv32.DLL+0x418f82]
C [nvoglv32.DLL+0xc3e94]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
v ~BufferBlob::Interpreter
J javax.media.j3d.Renderer.doWork(J)V
v ~BufferBlob::Interpreter
v ~BufferBlob::StubRoutines (1)

--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
0x09860800 JavaThread "J3D-InputDeviceScheduler-1" [_thread_blocked, id=6212, stack(0x0e5e0000,0x0e7e0000)]
0x09860000 JavaThread "J3D-SoundSchedulerUpdateThread-1" [_thread_blocked, id=7684, stack(0x0e3e0000,0x0e5e0000)]
0x018db000 JavaThread "J3D-RenderStructureUpdateThread-1" [_thread_blocked, id=7172, stack(0x0e1e0000,0x0e3e0000)]
0x018dac00 JavaThread "J3D-BehaviorScheduler-1" [_thread_blocked, id=7744, stack(0x0dfe0000,0x0e1e0000)]
0x018da400 JavaThread "J3D-TransformStructureUpdateThread-1" [_thread_blocked, id=1448, stack(0x0dde0000,0x0dfe0000)]
0x018da000 JavaThread "J3D-RenderingEnvironmentStructureUpdateThread-1" [_thread_blocked, id=4660, stack(0x0dbe0000,0x0dde0000)]
0x018d9800 JavaThread "J3D-SoundStructureUpdateThread-1" [_thread_blocked, id=8132, stack(0x0d9e0000,0x0dbe0000)]
0x018d9400 JavaThread "J3D-GeometryStructureUpdateThread-1" [_thread_blocked, id=5516, stack(0x0d7e0000,0x0d9e0000)]
0x018d8c00 JavaThread "J3D-BehaviorStructureUpdateThread-1" [_thread_blocked, id=6380, stack(0x0d5e0000,0x0d7e0000)]
=>0x018d8800 JavaThread "J3D-Renderer-1" [_thread_in_native, id=6548, stack(0x0c1e0000,0x0c3e0000)]
0x018d8400 JavaThread "J3D-MasterControl-1" [_thread_blocked, id=7232, stack(0x0bfe0000,0x0c1e0000)]
0x018d7c00 JavaThread "J3D-TimerThread" [_thread_blocked, id=7996, stack(0x0bde0000,0x0bfe0000)]
0x018d7800 JavaThread "J3D-RenderingAttributesStructureUpdateThread" [_thread_blocked, id=6648, stack(0x0b2e0000,0x0b4e0000)]
0x082f2000 JavaThread "FlExecutor-FlProgressThreadFlFactoryThread-1" [_thread_blocked, id=2848, stack(0x0a010000,0x0a210000)]
0x08205000 JavaThread "TimerQueue" daemon [_thread_blocked, id=1420, stack(0x09400000,0x09600000)]
0x081e4400 JavaThread "FlExecutor-SafeFlRunnerFlFactoryThread-1" [_thread_blocked, id=6252, stack(0x08cf0000,0x08ef0000)]
0x0810f000 JavaThread "Image Fetcher 1" daemon [_thread_blocked, id=2756, stack(0x086f0000,0x088f0000)]
0x0804d400 JavaThread "AWT-EventQueue-1" [_thread_blocked, id=7292, stack(0x083e0000,0x085e0000)]
0x05471000 JavaThread "Image Fetcher 0" daemon [_thread_blocked, id=3192, stack(0x07830000,0x07a30000)]
0x0542b000 JavaThread "AWT-Windows" daemon [_thread_in_native, id=7672, stack(0x07630000,0x07830000)]
0x0540b800 JavaThread "AWT-Shutdown" [_thread_blocked, id=656, stack(0x07430000,0x07630000)]
0x0548dc00 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=2636, stack(0x07230000,0x07430000)]
0x018d0c00 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=4304, stack(0x05070000,0x05270000)]
0x018c5400 JavaThread "CompilerThread0" daemon [_thread_blocked, id=7496, stack(0x04f70000,0x05070000)]
0x018c4c00 JavaThread "Attach Listener" daemon [_thread_blocked, id=7444, stack(0x04d70000,0x04f70000)]
0x018c4800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=4684, stack(0x04b70000,0x04d70000)]
0x018b4400 JavaThread "Finalizer" daemon [_thread_blocked, id=7132, stack(0x04970000,0x04b70000)]
0x018ab800 JavaThread "Reference Handler" daemon [_thread_blocked, id=5624, stack(0x04770000,0x04970000)]
0x017f9000 JavaThread "main" [_thread_blocked, id=2604, stack(0x00030000,0x00130000)]

Other Threads:
0x018a6c00 VMThread [stack: 0x04670000,0x04770000] [id=2856]
0x018f0c00 WatcherThread [stack: 0x05270000,0x05370000] [id=4300]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
par new generation total 1280K, used 289K [0x10010000, 0x10170000, 0x113c0000)
eden space 1152K, 25% used [0x10010000, 0x10058460, 0x10130000)
from space 128K, 0% used [0x10130000, 0x10130000, 0x10150000)
to space 128K, 0% used [0x10150000, 0x10150000, 0x10170000)
tenured generation total 15628K, used 13283K [0x113c0000, 0x12303000, 0x20010000)
the space 15628K, 84% used [0x113c0000, 0x120b8d60, 0x120b8e00, 0x12303000)
compacting perm gen total 24832K, used 24817K [0x20010000, 0x21850000, 0x24010000)
the space 24832K, 99% used [0x20010000, 0x2184c530, 0x2184c600, 0x21850000)
No shared spaces configured.

Dynamic libraries:
0x00400000 - 0x006aa000 C:\COMSOL35a\bin\comsol.exe
0x778e0000 - 0x77a1c000 C:\Windows\SYSTEM32\ntdll.dll
0x75e80000 - 0x75f54000 C:\Windows\system32\kernel32.dll
0x75b00000 - 0x75b4a000 C:\Windows\system32\KERNELBASE.dll
0x77810000 - 0x778d9000 C:\Windows\system32\USER32.dll
0x77ac0000 - 0x77b0e000 C:\Windows\system32\GDI32.dll
0x77a20000 - 0x77a2a000 C:\Windows\system32\LPK.dll
0x75d30000 - 0x75dcd000 C:\Windows\system32\USP10.dll
0x764e0000 - 0x7658c000 C:\Windows\system32\msvcrt.dll
0x76aa0000 - 0x76abf000 C:\Windows\system32\IMM32.DLL
0x76730000 - 0x767fc000 C:\Windows\system32\MSCTF.dll
0x6d7c0000 - 0x6da10000 C:\COMSOL35a\java\win32\jre\bin\client\jvm.dll
0x75dd0000 - 0x75e70000 C:\Windows\system32\ADVAPI32.dll
0x76360000 - 0x76379000 C:\Windows\SYSTEM32\sechost.dll
0x76680000 - 0x76721000 C:\Windows\system32\RPCRT4.dll
0x738d0000 - 0x73902000 C:\Windows\system32\WINMM.dll
0x7c360000 - 0x7c3b6000 C:\Windows\system32\MSVCR71.dll
0x75960000 - 0x759ab000 C:\Windows\system32\apphelp.dll
0x10000000 - 0x10007000 C:\Users\Standard\AppData\Local\FLVService\lib\FLVSrvLib.dll
0x76bc0000 - 0x77809000 C:\Windows\system32\SHELL32.dll
0x76a40000 - 0x76a97000 C:\Windows\system32\SHLWAPI.dll
0x76380000 - 0x764dc000 C:\Windows\system32\ole32.dll
0x759b0000 - 0x759bc000 C:\Windows\system32\CRYPTBASE.dll
0x00360000 - 0x00396000 C:\Windows\system32\btmmhook.dll
0x76240000 - 0x762cf000 C:\Windows\system32\OLEAUT32.dll
0x762d0000 - 0x762d5000 C:\Windows\system32\PSAPI.DLL
0x6d270000 - 0x6d278000 C:\COMSOL35a\java\win32\jre\bin\hpi.dll
0x6d770000 - 0x6d77c000 C:\COMSOL35a\java\win32\jre\bin\verify.dll
0x6d310000 - 0x6d32f000 C:\COMSOL35a\java\win32\jre\bin\java.dll
0x6d7b0000 - 0x6d7bf000 C:\COMSOL35a\java\win32\jre\bin\zip.dll
0x003e0000 - 0x003e6000 C:\COMSOL35a\lib\win32\fldynload.dll
0x73660000 - 0x736fb000 C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5\MSVCR80.dll
0x020c0000 - 0x0213f000 C:\COMSOL35a\lib\win32\flutil.dll
0x05680000 - 0x05848000 C:\COMSOL35a\lib\win32\ipv4\flnutil.dll
0x74260000 - 0x74271000 C:\Windows\system32\NETAPI32.dll
0x741e0000 - 0x741e9000 C:\Windows\system32\netutils.dll
0x758b0000 - 0x758c9000 C:\Windows\system32\srvcli.dll
0x741d0000 - 0x741df000 C:\Windows\system32\wkscli.dll
0x762e0000 - 0x7635b000 C:\Windows\system32\comdlg32.dll
0x75ca0000 - 0x75d24000 C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7600.16385_none_ebf82fc36c758ad5\COMCTL32.dll
0x71660000 - 0x71667000 C:\Windows\system32\WSOCK32.dll
0x76a00000 - 0x76a35000 C:\Windows\system32\WS2_32.dll
0x75e70000 - 0x75e76000 C:\Windows\system32\NSI.dll
0x715c0000 - 0x71647000 C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5\MSVCP80.dll
0x74920000 - 0x74930000 C:\Windows\WinSxS\x86_microsoft.vc80.openmp_1fc8b3b9a1e18e3b_8.0.50727.762_none_7b33aa7d218504d2\vcomp.dll
0x059f0000 - 0x05b45000 C:\COMSOL35a\lib\win32\fljni.dll
0x05960000 - 0x0599c000 C:\COMSOL35a\lib\win32\flpost.dll
0x05be0000 - 0x06335000 C:\COMSOL35a\lib\win32\flxmesh.dll
0x06340000 - 0x065a4000 C:\COMSOL35a\lib\win32\flmesh.dll
0x065b0000 - 0x0692e000 C:\COMSOL35a\lib\win32\flgeom.dll
0x06930000 - 0x06b6c000 C:\COMSOL35a\lib\win32\flarray.dll
0x06b70000 - 0x06bca000 C:\COMSOL35a\lib\win32\flumfpack.dll
0x059b0000 - 0x059d8000 C:\COMSOL35a\lib\win32\flcutil.dll
0x05b50000 - 0x05b5b000 C:\COMSOL35a\lib\win32\flblas.dll
0x05b60000 - 0x05b83000 C:\COMSOL35a\lib\win32\flspecfun.dll
0x06bd0000 - 0x06d65000 C:\COMSOL35a\lib\win32\fllapack.dll
0x05b90000 - 0x05b9f000 C:\COMSOL35a\lib\win32\flcluster.dll
0x06d80000 - 0x06d8d000 C:\COMSOL35a\lib\win32\clmpi.dll
0x06d90000 - 0x06f17000 C:\COMSOL35a\lib\win32\flsolver.dll
0x06f30000 - 0x06f5e000 C:\COMSOL35a\lib\win32\flarpack.dll
0x06f60000 - 0x06f95000 C:\COMSOL35a\lib\win32\fltaucs.dll
0x06fa0000 - 0x070c0000 C:\COMSOL35a\lib\win32\flspooles.dll
0x070c0000 - 0x070da000 C:\COMSOL35a\lib\win32\fldaspk.dll
0x070e0000 - 0x070ef000 C:\COMSOL35a\lib\win32\sundials.dll
0x6d000000 - 0x6d12e000 C:\COMSOL35a\java\win32\jre\bin\awt.dll
0x735b0000 - 0x73601000 C:\Windows\system32\WINSPOOL.DRV
0x6d210000 - 0x6d263000 C:\COMSOL35a\java\win32\jre\bin\fontmanager.dll
0x6d570000 - 0x6d583000 C:\COMSOL35a\java\win32\jre\bin\net.dll
0x754a0000 - 0x754dc000 C:\Windows\system32\mswsock.dll
0x75490000 - 0x75496000 C:\Windows\System32\wship6.dll
0x6d590000 - 0x6d599000 C:\COMSOL35a\java\win32\jre\bin\nio.dll
0x754e0000 - 0x754f6000 C:\Windows\system32\CRYPTSP.dll
0x75280000 - 0x752bb000 C:\Windows\system32\rsaenh.dll
0x75a20000 - 0x75a2e000 C:\Windows\system32\RpcRtRemote.dll
0x74a00000 - 0x74a1c000 C:\Windows\system32\iphlpapi.dll
0x749f0000 - 0x749f7000 C:\Windows\system32\WINNSI.DLL
0x75360000 - 0x753a4000 C:\Windows\system32\DNSAPI.dll
0x747e0000 - 0x747f2000 C:\Windows\system32\dhcpcsvc.DLL
0x747c0000 - 0x747cd000 C:\Windows\system32\dhcpcsvc6.DLL
0x70550000 - 0x70553000 C:\Windows\system32\icmp.Dll
0x74bd0000 - 0x74be0000 C:\Windows\system32\NLAapi.dll
0x71270000 - 0x71280000 C:\Windows\system32\napinsp.dll
0x70ee0000 - 0x70ef2000 C:\Windows\system32\pnrpnsp.dll
0x70ea0000 - 0x70ea8000 C:\Windows\System32\winrnr.dll
0x70e90000 - 0x70e9d000 C:\Windows\system32\wshbth.dll
0x08f60000 - 0x08f85000 C:\Program Files\Bonjour\mdnsNSP.dll
0x75940000 - 0x7595a000 C:\Windows\system32\SspiCli.dll
0x09090000 - 0x090a3000 C:\COMSOL35a\lib\win32\flwin32.dll
0x74850000 - 0x74888000 C:\Windows\System32\fwpuclnt.dll
0x70e80000 - 0x70e86000 C:\Windows\system32\rasadhlp.dll
0x74fc0000 - 0x74fc5000 C:\Windows\System32\wshtcpip.dll
0x6d180000 - 0x6d1a3000 C:\COMSOL35a\java\win32\jre\bin\dcpr.dll
0x6d340000 - 0x6d346000 C:\COMSOL35a\java\win32\jre\bin\jawt.dll
0x090d0000 - 0x090f6000 C:\COMSOL35a\java\win32\jre\bin\j3dcore-ogl.dll
0x60590000 - 0x60658000 C:\Windows\system32\OPENGL32.dll
0x6f940000 - 0x6f962000 C:\Windows\system32\GLU32.dll
0x71ad0000 - 0x71bb7000 C:\Windows\system32\DDRAW.dll
0x71d10000 - 0x71d16000 C:\Windows\system32\DCIMAN32.dll
0x760a0000 - 0x7623d000 C:\Windows\system32\SETUPAPI.dll
0x75ab0000 - 0x75ad7000 C:\Windows\system32\CFGMGR32.dll
0x75ae0000 - 0x75af2000 C:\Windows\system32\DEVOBJ.dll
0x738b0000 - 0x738c3000 C:\Windows\system32\dwmapi.dll
0x090b0000 - 0x090bf000 C:\COMSOL35a\lib\win32\flmklblas.DLL
0x0a350000 - 0x0ac24000 C:\COMSOL35a\lib\win32\flmklblaswrap.DLL
0x09130000 - 0x09194000 C:\COMSOL35a\lib\win32\libguide40.dll
0x69500000 - 0x69f01000 C:\Windows\system32\nvoglv32.DLL

VM Arguments:
jvm_args: -Dfl.mainclass=com.femlab.gui.Femlab -Dfl.root=C:\COMSOL35a -Dhost.name=unknown -Dfl.license_file=C:\COMSOL35a\license\license.dat -Dfl.system_root=C:\Windows -Dfl.compiler= -Dfl.ipver=ipv4 -Dfl.cluster=off -Dfl.clusterdisplay=off -Dfl.stacksize=2m -Xss2m -XX:ParallelGCThreads=2 -Xms16m -XX:MinHeapFreeRatio=15 -XX:MaxHeapFreeRatio=30 -Dsun.java2d.ddoffscreen=false -Dsun.java2d.d3d=false -Dsun.java2d.noddraw=true -Xmx256m
java_command: <unknown>
Launcher Type: generic

Environment Variables:
CLASSPATH=.;C:\Program Files\Java\jre6\lib\ext\QTJava.zip
PATH=C:\COMSOL35a\lib\win32;C:\COMSOL35a\lib\win32\ipv4;C:\COMSOL35a\ext\cadimport\win32;C:\COMSOL35a\java\win32\jre\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32\wbem;c:\program files\microsoft sql server\90\tools\binn\;C:\Windows\system32\windowspowershell\v1.0\;C:\Program Files\MATLAB71\bin\win32;C:\Program Files\QuickTime\QTSystem\
USERNAME=Standard
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 23 Stepping 10, GenuineIntel



--------------- S Y S T E M ---------------

OS: Windows NT 6.1 Build 7600

CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 7 stepping 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3

Memory: 4k page, physical 3140204k(1236976k free), swap 4194303k(3858000k free)

vm_info: Java HotSpot(TM) Client VM (10.0-b22) for windows-x86 JRE (1.6.0_06-b02), built on Mar 25 2008 01:22:05 by "java_re" with MS VC++ 7.1

time: Sat Dec 26 14:40:12 2009
elapsed time: 8 seconds

It looks like Java VM runs out of memory while rendering your structure (or its mesh).
I would try to increase Java heap size (MAXHEAP) in the comsol.opts file, and see if it helps.

You don't have to worry about the version of Java because COMSOL comes with java self-contained as part of the installation. You can override this and use the java installed on your OS, but this is not advised unless there is some real need.

Most error messages you receive from COMSOL are printed using Java, so it is easy to think it is a java problem, but most likely is a problem with your model. How much memory to you have on your computer, what type of OS are you using, etc. ? Then we can go from there. Try a very simple model first, and see what your limitations in resources are; particularly with 32-bit windows computers which are the most limited.

Hi I am using Windows 7 32-bit with 3 gigabyte RAM.

I have tried increasing MAXHEAP under comsol.opt settings but it still crashes frequently. Once in a while the files manage to open. The models are pretty simple, it's just a rectangular block. Some files aren't even meshed yet, but the meshing usually involves a few thousand elements.

Other files like 2D figures with meshing of probably less than a thousand elements crash too.

It should be noted this problem didn't arise when I was using my previous desktop with 2 gigabyte RAM, Windows Vista 32-bit. I had opened the exact same models without having it crash on me at any time.

Thanks

Hi

have you checked the KB, applied the hotfix 1 on 3.5a (if it applies to you), or tried a search of "java" on the KB's, there a few "know" issues described thered depending on your versions

Last but not least try Support, I find them very efficent

Good luck
Ivar

Hi

Thanks for the reply.

Have installed the Hotfix but it didn't help.

There is no luck with the KB. Most of the help regarding Java involves solving Java-Matlab related problems and error messages. There is an article involving resolving memory intensive models, by changing MAXHEAP/MAXHEAPSERVER in the comsol.opts file, which I have tried and did not work at all.

Finally, because I am using a "student license" I am not eligible to ask for help in support. I have tried it before and was told this.

EDIT: Seems that by running COMSOL under "Compatibility mode with Windows Vista" fixed the issue though. Thanks all for the help!

Hi

thanks for the clue, Win7 is new, cannot expect everything to be 100% compatible all the time

Have a nice day
Ivar

Hi There,
I have the same problem as you. COMSOL keeps closing for some models. I don't think I have memory problem because my model is not so large compared to my previous models and I have 12Giga memory. I receive the same Java errors as you. My model is a transient piezoelectric solid stress strain model and I use windows XP. Do you have any idea how I should fix my problem.
Thanks
Nastaran

Hi

This reminds me about one issue that happend to me with a heavy model file:

Try to open COMSOL with any simple model, turn off the "show symbols" feature in the graphics menu to the left close COMSOL and reopen your model

or access this by Options Preferences - Visualisation tab turn off Symbols (and any other extra feature), If I remember it was linked to a Java bug when too many things were showed on the screen

there is something in the KB about this I believe

Hope this helps
Ivar

Ivar,
I tried that but it didn't help and this comsol model keeps closing as soon as I try to solve it.but I will keep your advice in mind because I usually have a lot of symbols shown in comsol visiualization.
Thank you
Nastaran

Hi Everyone,

Although the posts are for about 2 years ago, but I write these cause this may work for someone else.
I had the same problem! I tried "running in compatibility mode", "disabling windows vista Aero display", "changing my ATI settings", .. none of them worked!
Then I went to Option>Preferences>Graphics> and changed "Rendering" from OpenGL to "DirectX 9". Things are working well by now!

Hope be useful for others,
Mona

Mona,
Thanks for sharing this good information. Actually this problem still happens to me sometimes. Next time it happens,I will try the setting that you recommanded.
Regards,
Nastaran

Hi

this hapened to me each 2-3 months with 4.1 and 4.2, but it seemd to be Windows that for some reason had black listed comsol and did not allow it to launch, it appeared more often if for some reason I had to kill the process or COMSOL crashed, but 3 or more times without a graceful COMSOL exit.
Eigther a reboot, or logging in as another person launcing COMSOL once, then opening a file saving it and closing correctly mostly reset the things. I have not had it with 4.2a nor 4.3. But I have also updated my Windows an other software a few times since too ;)

It appeared two days aftre a Windows update too, while before I had run 4.1 for months without problems.

As there are many technologies linked, OS, Java, DirectX ... and many software that uses these things, I suspect some cross incompatibilities.

Another knowncase : a BAD RAM location, you could check your RAM, as today we have quite a lot and a HW error is not always easy to detect neither

--
Good luck
Ivar

Hi everyone,

I did the same as Mona did and it worked for me!

Cheers,

Shivam

Hi All,

I too did what Mona said, and it works now.
Great, Thanks!!

Dhiraj.

Hi all,
Comsol was closing too often whenever i hover over the graphics window. Hence i had to build and run the model every time. But the solution suggested by Mona was really a lifesaver. I issue has been fixed.

Thanks and Regards,
Mahesh

Hello,

This thread appears to be touching upon several different issues and some of the topics appear quite outdated. We will be closing this thread for further comments. To summarize known resolutions:

Graphics issues: www.comsol.com/support/knowledgebase/933/

General crashes: www.comsol.com/support/knowledgebase/1140/

COMSOL Multiphysics has stopped working: www.comsol.com/support/knowledgebase/1068/

Other installation issues: www.comsol.com/support/knowledgebase/browse/4/

Also, please see the system requirements: www.comsol.com/system-requirements

And also the hardware recommendations: www.comsol.com/support/knowledgebase/866/

If there are any issues not covered by these resources, please contact your COMSOL Support Team directly: www.comsol.com/support/