AutoCAD Land Desktop

[#1]

I am running LDD 2009.  Am getting error messages that "command not allowed because drawing contains objects from a newer version of this application", which has affected several commands.  The drawings have indeed been drawn in ldd 2009. Any help please?

[#2]

Have they ever been shared with someone who might have plain ACAD in 2010,11,12?  If they were saved in any of those versions they may be toast.

Reid

[#3]

The dwg have not been used by newer versions.  I created the drawings on 09.  I have done a repair to no avail.  Any other ideas would be greatly appreciated.

Margie

[#4]

Are all the servie packs for 09 installed?  Have you tried to reinstall LDC?  (If you do, remember to include the SP's)

Reid