After upgrading from amember version 3 to version 4, we were left without a coppermine plugin. Currently running version 1.5 of coppermine with Mehdi's coppermine bridge between my Joomla 1.5, but every time I bridge it does a crazy re-arrangement of the ownership of albums. Removing the bridge returns album ownership is to normal. Not sure what the problem is, but circumventing joomla and going straight from amember to coppermine is preferred. Any news on the coppermine plugin being updated for ver 4?
Coppermine Gallery is free, so you can download the source code and documentation at: http://coppermine-gallery.net/ The aMember3 version worked great. That should provide a good map for creating a version 4 compatible plugin.