I have been using version 1.3.8 for a while and have used some add-ons in the past without incident.

During the past few days, I have tried to add a few new ones and each time the admin pages do not reflect those changes. I have verified that the files were uploaded and any changes were made correctly. I just don't see them in the Admin.

Add-Ons recently tried:
AutomaticLogin
Column Layout for Product Listing
Edit Orders from Admin

Any help would be appreciated.

--Greg