I have a project that was produced in autocat C3D ver 2012. We recently upgraded to ver 2014. When I opened my cross section file I received a message saying the project was created in a newer version and the C3D options would be disabled (proxy mode) Is there a way to recover the file?
I assume you are seeing the message when you open the file in 2012 and thus you suspect the file has been upgraded to 2014. If that has happened there is no way to restore it to 2012 other than by restoring a back up copy.
There is no newer version of C3D than 2014. I wonder if you have objects from another vertical app embedded in your drawing. Maybe an object enabler will solve it.