Hi Bill. I've moved your question to the PADS > Layout community for a quicker response.
Thank you Cathy
Are you trying to bring into PADS an Orcad or Allegro layout? If it is an Orcad, you can import it with out any Allegro export with special scripts. For Allegro you need to have top Allegro license to run 'main out' command. It looks like the issue is on the Allegro end.
Please contact our CSD (Customer Support Department) and they may be able to assist.
I run into similar problems.
As I was prepping a database to send to MGC support, I stumbled upon the solution (that worked for me, at least.)
The Allegro to PADS translation appears to use Cadence Extracta from their translator Skill script to list out the objects used to build a new PADS boardfile.
If I have the Allegro file open in our C:\releasemanagement\hardware\ directory, I get this error message.
But, if I copy my working Allegro file to Desktop\Translator directory and reopen it in Allegro before running "Main Out", the translator works great.
Try it from a subdirectory of Desktop, not your project directory...
Several times a week, in fact. (I mean, you have Allegro... why not?)