It could be a problem with the CAD background saved in the file. Do you still have the old version of Ram Concept that the model was created in available? If so, open the file with the prior version. Assuming that works, delete the imported CAD background and save. Then try opening it with the current release.
If that's not it, send over your file please. The Secure File Upload link (below left) will guide you.
If that's not it, send over your file please. The Secure File Upload link (below left) will guide you.
