We have just updated one of our workstations to VW11 to take advantage of the supposedly better support for DWG conversion.
However, we are still getting CriticalOpenDWG! errors on some drawings - including those where we have created a test drawing in-house on Vectorworks (9.5), converted it to a .dwg, worked on it on our AutocadLT (2002) workstation, and then sent it back to our VW workstations. The drawings are stripped out of all excess data, and are only 200K or so in size. What is causing this problem and what can we do to help our clients format the drawings better when sending to us?