Garry,
I have BobCad/Cam V18 and it will of course not open your .bbcd files.
I know you said "V24 only" but wasn't sure if the limitations was for newer or earlier versions or both.
If you can I would be very grateful if you could export the files (especially the back) to .dxf or .cad or .tap which would be compatible with my V18.
I think the files are small enough to email.
If you can't, then just ignore my message and I will understand.
Thanks,
Cecil