AutoCAD LT

[#1]

I'm having a constant problem with Autocad 2010LT crashing on startup. After clicking on the AutocadLT 2010 icon the program starts to run, I see the start-up screen, and then everything disappears without any notice or error message.  

I have installed service Updates 1 and 2 as well as the "Startup Error and Text Editing Hotfix". Nothing that I have read on the forums seems to fix the problem. I'm running Windows 7 Professional (64-bit). I should also mention that I have been running this version of the software on this computer without any issues for over 1 year before encoutering this problem.

Any suggestions would be greatly appreciated.

[#2]

What changed on your Computer?

And LT 2010 is not designed for Win 7. Did you install under compatability mode?

Is it a 64 bit seat of LT?

[#3]

Thanks for the quick reply Charles (nice house designs BTW).

The only thing that changed is that I installed the new version on Norton Internet Security. I doubt the version of Autocad LT I have is 64 bit, but I can't be sure because it doesn't say so in the box. We originally ran in the software in windows XP on a mac. 

I just looked in the Adlm log file, and this is the error message I'm getting:

Reason=Fatal error

ComputerName=ZEI2-THINK

OS=6.1.7601.Service Pack 1 (forum edit: note that Service pack 2 is installed)

File=AdlmIntLicense.cpp,Line=486

VendorID=6 [ADLMPIT]

VendorError=25 [Error has occured while parsing Product Information Table file]

Reason=Fatal error

ComputerName=ZEI2-THINK

OS=6.1.7601.Service Pack 1 (forum edit: note that Service pack 2 is installed)

File=AdlmIntLicense.cpp,Line=487

AdlmIntError=2 [Failed: Internal programming error]

Reason=Fatal error

ComputerName=ZEI2-THINK

OS=6.1.7601.Service Pack 1 (forum edit: note that Service pack 2 is installed)

File=AdlmIntSATSLicense.cpp,Line=958

AdlmIntError=17 [The license was not found]

I found a similar error on the forums and Autodesk's reply was the you need to re-install as soon as you get the "parsing Product Information Table file" error. The problem is that when I do this, the program runs fine for a couple of days, and then I get the error again. I've reinstalled the software about 10 times over the past three weeks. 

I'll reinstall and try your suggestion of running it in compatibility mode.

[#4]

>>>...Norton Internet Security...<<<

That's been known to break AutoCAD for many years now. Uninstall it completely, restore you PC to the day/week before you did that, repair reinstall LT (or remove and reinstall it per Autodesk's guidelines), the test.

Autodesk recommended uninstall/reinstall procedures are as follows
Uninstall: http://usa.autodesk.com/getdoc/id=TS45252

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

BTW, 2010 only installs as a 64bit in Win7 64bit, and only 32bit in Windows 32bit: you could not mix and match no matter how hard you tried to do it.