Unable to save design file message received when saving a DWG file.The message is:
"Unable to save design file. Most likely, network connection was lost. Do you want to Retry"
when trying to save a DWG file.
The files in question have been opened locally and the message is still received. In order to resolve this if the problem is file specific, go to:
Utilities > DWG > Audit
This will allow the DWG file to be repaired and should save without this message.
The DWG Audit tools were removed in MicroStation V8i SELECTseries 1 (08.11.07.171) when the RealDWG Libraries were introduced. Any auditing required for repairing DWG files should be performed from within AutoCad.