FATAL ERROR: Error Code (0x64660005) When Opening Drawing On Windows 7 64bit

[Anonymous]

I am having an issue with my users that have AutoCAD LT 2000i installed on Windows7 64bit trying to open a .dwg file that was created in AutoCAD 2012.   They are receiving the error:

"FATAL ERROR: Error code (0x64660005) c:\program files (x86)\common files\autodesk shared\acismobj15.dbx"

The strange thing is this is only happening on some files, some others open OK.  I have tried opening the file on XP and on Windows7 32bit using LT 2000i and the files open fine, just not on a 64bit.  

Any help on this would be greatly appreciated as my users are having major delays.

Thanks

[Charles_Shade]

Is everything being saved down to AutoCAD 2000 format?

Proxy Objects from the 2012 seat an issue at all? Any warnings there?

Dynamic Blocks being used?

Have you tried saving as a R14 DWG or roundtripping through R12 DXF?

Tried -EXPORTTOAUTOCAD? (note the hyphen)

Another Forum to try while waiting here:

Installation and Licensing Forum:
http://forums.autodesk.com/t5/Installation-Licensing/bd-p/24

Autodesk KB on dbx errors:

http://usa.autodesk.com/adsk/servlet/u/bsearch/results?qt=dbx+errors&siteID=123112&catID=18297903&p=...

Someone with that combination of the 2000i software and Win 7 OS may come along with advice here.

Bravo for getting the 2000i to run at all! When was that; Win95?

[pendean]

Lt2000i is not designed for any 64bit OS, or Win7: you could try installing it in Win7's XPMode option for old software and see if that helps. Follow the detailed uninstall procedures noted by others and completely update 2000i.