Plugins for the Coppermine Photo Gallery are add-ons that use the plugin interface of Coppermine.
Read up the documentation that comes with Coppermine to find out more, e.g. how to install a plugin.

Coppermine version: cpg1.4.x
Plugin name: cpgforum
Plugin version: 1.1.3
Plugin author: foulu
Plugin announcement thread: http://forum.coppermine-gallery.net/index.php/topic,51535.0.html
Plugin support: there is no support for this plugin on the support forum of coppermine-gallery.net. Instead, visit http://cpgsf.amfcvn.net/forum.php - the support forum driven by cpgforum and maintained by the plugin author foulu.


This plugin will generate a simple forum that fully integrates into coppermine both logically (user management) as well as visually (using Coppermine's theme).
The folder name of the plugin is "adaptor", which exists for historical reasons. The plugin is not a "genuine" plugin in the aspect that you can not just upload a folder into the plugins folder. There are some more files - some of them reside outside the plugins folder.

Install:
1) Extract ALL files in the archive to a temporary folder, preserving the exact structure.
2) Copy all files and folders that you extracted into the temporary folder in the previous step into your gallery's root folder. You should then have four additional files inside your gallery root: forum.admin.php, forum.misc.php, forum.php and readme.txt. You should have one additional folder within your gallery root: a folder named "adaptor" should exist in your webroot. Additionally, you should have another folder within the plugins folder that is named "adaptor" as well.
3) Go to your plugin manager in your browser and install as you would install any other plugin.