I have several older Rhino 3DM models containing meshes created in autocad that will no longer open for me in version 6 (they never finish rendering the meshes).
These files all opened in v5 (on an older computer even) but will no longer open in v6.
Is their a startup command/option that might be of help?
Version 6 SR7
(6.7.18199.22081, 7/18/2018)
Commercial
Hello - I have your file - it opens fine here in V6 - you might try blocking VRay in PluginManager and then restart Rhino and try to open these files - any better?