AutoCAD LT 2011 closes immediately after starting

[Anonymous]

I've been using LT 2011 for a year on Vista with no problems.  Now when I try to use it, the Splash screen appears, the window 'frame' appears with the logo and name in the top bar, but then it all crashes.   I have 'repaired' it from the disc - no difference; 'reinstalled it - no difference and even 'System Restored' to 10 days previously - no difference.

The only changes at that time were Windows updates but System Restore would remove those surely?

Does anyone have any ideas?

[pendean]

See if changing DEP settings with AutoCAD fixes the problem:

http://windows.microsoft.com/en-US/windows-vista/Change-Data-Execution-Prevention-settings

[Anonymous]

Thanks Dean.

Unfortunately it makes no difference.   DEP already knew that it should ignore Autocad.

I saw in another post, from ZE12, that 2010 has the same problem.   There you blamed Norton, but Norton does not exist on my machine.

Do you have any more suggestions, as it is very annoying that I can't alter my drawings ?

NB No-one emailed me to say that you had replied.

[pendean]

If all else fails, and you got the time, explore the Autodesk recommended uninstall/reinstall procedures are as follows
Uninstall: http://usa.autodesk.com/getdoc/id=TS45252
Reinstall (for XP/Vista users): http://usa.autodesk.com/getdoc/id=TS75218

Ensure the user installing/uninstalling and using the product have enough rights to do so (install and reinstall as local administrator):
Unable to run AutoCAD® as a restricted user http://usa.autodesk.com/getdoc/id=TS1055299