'Illegal Instruction in MSVCRT'

[kjoyce]

I am using AVG - which I have disabled.

The error message is:
Unhandled exception in TrackIR.exe (MSVCRT.DLL) 0xC000001D: Illegal Instruction.

Once the dump occurs (in FSX) the software remains unstable in other games until reboot.

[VincentG]

What type of TSR applications do you have running in the background?

Keyboard software?

OS?

System Type?

[kjoyce]

I use FSAutoStart to terminate most of the TSRs so there is precious little running with FSX. Rig specs: Acer 9504 Pentium M760 2.0Ghz,2 Gb RAM,Win XP Home, ATI x700 256Mb.

TrackIR.exe bombs out at 0x77c4cb5a after about 30secs - 1 minute of flying. I have uninstalled .NET Framework 3.0 and all copies of MSVCRT.DLL are version 7.0.2600.2180 created 29/07/2005 size 335kb

[VincentG]

Remove the TrackIR software by doing the following:
a. Click "Start"
b. Click on the "Control Panel"
c. Click "Add/Remove Programs"
d. Find "TrackIR" and click "Change/Remove"
e. Once launched it will give the option to completely remove it.
f. Delete the NaturalPoint folder at the following location, C:\Program Files\NaturalPoint
g. Download and reinstall the software from the following location,
http://www.naturalpoint.com/trackir/06- ... nuals.html

[kjoyce]

Did that, same problem, same dll, same instruction. 1 minute into default flight- bam.

I do not believe it is the TrackIR software Vincent - I have been using it for ages. Maybe my copy of the dll is corrupt...

[VincentG]

It is something I've never seen......

[kjoyce]

Vincent, after much investigation and head-scratching I am beginning to suspect Visual Studio as the culprit. I am going to install the latest service patches and hope it restores MSVCRT.DLL.

I'll let you know...

Also - many many thanks for your time and effort on this - especially as it is probably not your fault!

[VincentG]

No issues, and let me know what you find out...

What version of VS are you running?

[kjoyce]

I think I may have caused the problem when uninstalling various items from my computer. I may have caused shared files to be removed...

I have reinstalled Windows, etc etc and now all is well.

A little knowledge is a dangerous thing...

Thanks for your help Vincent!

[VincentG]

No issues, glad to help out......