Originally Posted by
Superman
That dialog box is telling you that you hae loaded a CNC machine that is set up to run in X3. That file, the CONTROL, and PST file will have to be updated to X5. This can be done thru the "UpdatePost" C-hook
You may have to browse for and re-select the CNC machine in the correct directory, when opening a session from a previous version
Now, the chains are from a solid entity and cannot be exported/imported via the operations manager
You could open the X3 file with X5 and then do a "Save As", or you could "Merge" the old file into the new session