Hi everyone,

This is my 1st post and sadly its about an issue that I don't know how to deal with.

I have autocad 2009 installed on my workstation as well as 2004. Currently running windows xp w/ sp3, 3gb ram, and an nvidia 9600 series videocard.

There are certain files that would normally open in 2004, but when I try to open said files in autocad 2009, I get a window that states:

(insert full pathname to drawing here)

Unable to open this drawing.
It contains incorrect or corrupted information.

The RECOVER command may be able to restore
undamaged material from this drawing.

The technical problem detected is:
(insert full pathname to drawing here)

I only have one choice and that is to press OK.

Any ideas on why this could be happening? This is occuring on various files on various different projects that I'm currently working on.

Thanks in advance,
Chuck