AutoCAD Civil 3D

[#1]

I am running 2011 c3d on windows 7 with 15 GB of ram.

An error message I get is "reading triangles from file" and the program locks up to where you need to do a reset on the computer. I have an existing ground surface that is data shortcut into the file I am opening when I get this error. The existing ground surface is about 5 mg in size. I'm not sure if this is causing the error. Any information or help on this appreciated.

Thanks

[#2]

What happens if you open the Drawing with RECOVER Command in Civil 3D?

Does that work?

[#3]

Thanks for the reply,

Yes that removes three errors it find and then the drawing works fine.

Thanks

[#4]

I am having the same issue, though with Civil 3d 2012.  I have tried recovering the drawing, but it still gives me this error.  Thoughts?

[#5]

Try to load, in an empty drawing, the damaged file as XREF, then "bind" it, save and exit: any changes?