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Thank you, I've just emailed support. Concerning the workaround I mentioned: well it was just to good to be true .. after running stable in NT4 compatibility mode for two days, the beta has gone back to crashing on start today, all other things constant as far as I can see. So compat. mode does not seem to be the answer...

Please email support, and we will send you a sample app to test with.

Running beta4 in NT compatibility mode (and beta3 yesterday) is better. It still crashes, this time exiting the program, but not so often than before...

The only problem is that I have to disable my secondary touchscreen monitor, otherwise the interface doesn't get completely drawn. I've sent a screenshot to Morgan about it.
Needless to say, I need my 2nd monitor ON...

I'll keep on testing.

Crashes on my system, too.

However it doesn't crash always.

Is it possible that the automatic update-check has something to do with the problems?

here is a crash call-stack:

Call stack of thread 00000EC8
Address Stack Procedure / arguments Called from Frame
05CAE258 77E80462 kernel32.RaiseException RPCRT4.77E8045C 05CAE254
05CAE25C 000006BA ExceptionCode = 6BA
05CAE260 00000001 ExceptionFlags = EXCEPTION_NONCONTINUABLE
05CAE264 00000000 nArguments = 0
05CAE268 00000000 pArguments = NULL
05CAE270 77E80750 RPCRT4.RpcRaiseException RPCRT4.77E8074B 05CAE26C
05CAE274 000006BA Arg1 = 000006BA
05CAE280 77ED460B ? RPCRT4.NdrGetBuffer RPCRT4.77ED4606 05CAE27C
05CAE660 76EE7CA4 ? 76EE2D89 76EE7C9F 05CAE65C
05CAE674 76EE7C65 76EE7C89 76EE7C60 05CAE670
05CAE6C8 76EE7BDF ? 76EE7C2F 76EE7BDA 05CAE6C4
05CAE6D8 76EE7BCB 76EE7BD5 76EE7BC6 05CAE6E4
05CAE6E8 719BA05C mswsock.719BA20E mswsock.719BA057 05CAE6E4
05CAE6EC 00010004 Arg1 = 00010004
05CAE6F0 00000000 Arg2 = 00000000
05CAE6F4 00000000 Arg3 = 00000000
05CAE728 719BC7CE mswsock.719BA031 mswsock.719BC7C9 05CAE724
05CAE744 719BC90C mswsock.719BC787 mswsock.719BC907 05CAE740
05CAE754 71A14ECE Includes mswsock.719BC90C WS2_32.71A14ECC 05CAE750
05CAE9A0 71A14DF6 ? WS2_32.71A14E27 WS2_32.71A14DF1 05CAE99C
05CAE9C0 71A14D91 WS2_32.71A14DAC WS2_32.71A14D8C 05CAE9BC

The last stack may be misleading. This time I waited until TrackIR crashed and then attached the debugger:

Call stack of main thread
Address Stack Procedure / arguments Called from Frame
0012EF24 7C91D9CA Includes ntdll.KiFastSystemCallRet ntdll.7C91D9C8 0012F1A8
0012EF28 7C8645FD ntdll.ZwRaiseHardError kernel32.7C8645F7 0012F1A8
0012F1AC 0058EE10 ? kernel32.UnhandledExceptionFilter TrackIR5.0058EE0A 0012F1A8
0012F1B0 0012F20C pExceptionInfo = 0012F20C
0012F1CC 00584A03 TrackIR5.0058EDA6 TrackIR5.005849FE 0012F1C8
0012F1D8 005904A4 Includes TrackIR5.00584A03 TrackIR5.005904A2 0012FFC0
0012F1EC 0058BA7E TrackIR5.00590492 TrackIR5.0058BA79 0012FFC0
0012F214 7C9132A8 Includes TrackIR5.0058BA7E ntdll.7C9132A6
0012F238 7C91327A ? ntdll.7C913282 ntdll.7C913275
0012F25C 7C93AA0F ? ntdll.7C913247 ntdll.7C93AA0A
0012F2E8 7C91E48A ? ntdll.7C93A970 ntdll.7C91E485

Maybe it has something to do with the profiles? I moved away all but the "default.xml"-profile in the "Profiles"-directory and the crashes seem to disappear. But I'm not sure. Maybe just a conincidence...

Some more info:

# trdb.log - startup with crash (all profiles present):

[06/08/2009 23:27:04:421] 0xc40: Begin TrackIR...
[06/08/2009 23:27:04:421] 0xc40: Creating TrackIR application instance...
[06/08/2009 23:27:04:421] 0xc40: Detected Operating System : XP_32
[06/08/2009 23:27:04:421] 0xc40: Loading Application Settings...
[06/08/2009 23:27:04:437] 0xc40: Application Settings loaded.
[06/08/2009 23:27:04:437] 0xc40: Loading Profiles...
[06/08/2009 23:27:04:453] 0xc40: Profiles Loaded.
[06/08/2009 23:27:04:484] 0xc40: Loading Game List...
[06/08/2009 23:27:04:500] 0xc40: Game List Loaded.
[06/08/2009 23:27:04:500] 0xc40: Creating Main display...
[06/08/2009 23:27:05:156] 0xc40: Main display created.
[06/08/2009 23:27:05:156] 0xc40: Initializing 3D view...
[06/08/2009 23:27:05:156] 0xc40: OpenGL Version : 2.1.8664
[06/08/2009 23:27:05:156] 0xc40: OpenGL Renderer : ATI Radeon HD 4800 Series
[06/08/2009 23:27:05:156] 0xc40: OpenGL Vendor : ATI Technologies Inc.

-> CRASH

# trdb.log - startup without crash (only "default.xml" present)

[06/08/2009 23:30:44:625] 0xf10: Begin TrackIR...
[06/08/2009 23:30:44:625] 0xf10: Creating TrackIR application instance...
[06/08/2009 23:30:44:625] 0xf10: Detected Operating System : XP_32
[06/08/2009 23:30:44:625] 0xf10: Loading Application Settings...
[06/08/2009 23:30:44:640] 0xf10: Application Settings loaded.
[06/08/2009 23:30:44:640] 0xf10: Loading Profiles...
[06/08/2009 23:30:44:640] 0xf10: Profiles Loaded.
[06/08/2009 23:30:44:687] 0xf10: Loading Game List...
[06/08/2009 23:30:44:703] 0xf10: Game List Loaded.
[06/08/2009 23:30:44:703] 0xf10: Creating Main display...
[06/08/2009 23:30:45:343] 0xf10: Main display created.
[06/08/2009 23:30:45:343] 0xf10: Initializing 3D view...
[06/08/2009 23:30:45:343] 0xf10: OpenGL Version : 2.1.8664
[06/08/2009 23:30:45:343] 0xf10: OpenGL Renderer : ATI Radeon HD 4800 Series
[06/08/2009 23:30:45:343] 0xf10: OpenGL Vendor : ATI Technologies Inc.
[06/08/2009 23:30:45:453] 0xf10: 3D View initialized.
[06/08/2009 23:30:45:453] 0xf10: Begin TrackIR Software startup.
[06/08/2009 23:30:45:453] 0xf10: Detecting NaturalPoint camera...
[06/08/2009 23:30:46:546] 0xf10: Camera (serial # 110449) detected.
[06/08/2009 23:30:46:546] 0xf10: Initializing Camera...
[06/08/2009 23:30:46:546] 0xf10: Camera Initialized.
[06/08/2009 23:30:46:546] 0xf10: Starting Camera...
[06/08/2009 23:30:46:546] 0xf10: Camera Started.
[06/08/2009 23:30:46:546] 0xf10: Initializing TrackIR Enhanced.
[06/08/2009 23:30:46:562] 0xf10: TrackIR Enhanced initialized.
[06/08/2009 23:30:46:562] 0xf10: Loading ViewMod (version = 2)...
[06/08/2009 23:30:46:562] 0xf10: ViewMod Loaded.
[06/08/2009 23:30:46:656] 0xf10: TrackIR Software startup complete.
[06/08/2009 23:30:46:656] 0xf10: TrackIR application instance creation complete.
[06/08/2009 23:30:51:171] 0xf10: Begin TrackIR software shutdown.
[06/08/2009 23:30:51:171] 0xf10: Stopping UI thread.
[06/08/2009 23:30:51:171] 0xf10: UI thread stopped.
[06/08/2009 23:30:51:562] 0xf10: Stopping data processing thread...
[06/08/2009 23:30:51:562] 0xf10: Process data thread stopped.
[06/08/2009 23:30:51:562] 0xf10: Begin Camera shutdown.
[06/08/2009 23:30:54:062] 0xf10: Camera shutdown complete.
[06/08/2009 23:30:54:078] 0xf10: Releasing TrackIR app objects...
[06/08/2009 23:30:54:078] 0xf10: TrackIR app objects released.
[06/08/2009 23:30:54:078] 0xf10: Application ExitInstance complete.
[06/08/2009 23:30:54:078] 0xf10: End TrackIR.

My system:

Windows XP 32, SP3, 3GB RAM,

Processes:

Idle 0 0 2 0 16 0:00:00.000 0:57:28.875 0:00:00.000
System 4 8 166 452 220 0:00:00.000 0:00:17.718 0:00:00.000
smss 612 11 3 19 396 0:00:00.015 0:00:00.000 0:30:55.687
csrss 668 13 13 354 5128 0:00:01.625 0:00:06.203 0:30:53.421
winlogon 828 13 21 470 776 0:00:00.296 0:00:00.671 0:30:48.875
services 876 9 16 258 4344 0:00:01.640 0:00:10.000 0:30:44.890
lsass 888 9 20 346 1492 0:00:00.406 0:00:00.171 0:30:44.781
svchost 1052 8 18 198 4832 0:00:00.046 0:00:00.031 0:30:43.359
svchost 1116 8 10 224 4316 0:00:00.140 0:00:00.015 0:30:42.468
svchost 1148 8 66 1518 29724 0:00:00.406 0:00:00.406 0:30:42.328
svchost 1200 8 14 183 7360 0:00:00.046 0:00:00.015 0:30:42.140
spoolsv 1240 8 10 142 5656 0:00:00.015 0:00:00.015 0:30:41.734
explorer 2040 8 16 523 37248 0:00:01.437 0:00:33.734 0:30:33.656
svchost 3556 8 8 94 3480 0:00:00.015 0:00:00.015 0:28:19.328
explorer 360 13 9 385 33300 0:00:02.546 0:00:04.687 0:21:10.468
TrackIR5 2868 8 4 181 37428 0:00:00.359 0:00:00.218 0:00:08.625

I don't think I can do much more without debug-info

Regards
/me

please email support, with your issue

Just did. But it's not really an "issue". Just wanted to "help out" with the beta.

Best Regards

Just reported to Morgan, with lots of logs.
Happy bughunting!