Quote Originally Posted by maperr55 View Post
With the 1.5 upgrade does that mean ONLY 1.5 Add Ons will work with it?
That's not what it means.

As with ANY version change, there may be things that have had to change in the core code which may make some addons need updating to work with the new/better methods of coding.

It just so happens that the v1.5.0 upgrade needed to touch a lot of things in the admin in the interest of improving security and insulating against more sophisticated web attack strategies. Plus, storeowners have been asking for admin-level access control, which was also necessary from a PCI perspective, so that was done but required a complete rearchitecting of the admin menu system. And the list goes on. You can read all about all the changes in the Release Announcement and in the documentation in your /docs/ folder.

But that's more than what you were asking.

Simply put: If an addon for v1.3.x touched admin files then it most likely needs some updating to work in v1.5.0, especially related to menus and form submissions, and a few other areas.