Dear Victor
If you have an ACCPAC Plus issue, you have come to the wrong Forum to post your issue.
For further information, you can go to the Plus Community Discussion Forum at www.pluscommunity.com or call AI for support if you are on a Support Plan with them.
Based on the details you have given, and the error message being returned, my first suggestion would be to check the AR data path in the Windowing System Manager Start List to ensure it is still pointing to the directory you expect it to be. Also, check the file extension on your copied data files to ensure it matches the one defined in this AR Start List.
Good luck!
Regards,
Softrak Support