GD bbPress Toolbox Pro 4.2.1 is a maintenance release fixing a couple of bugs related to latest WordPress update, various small updates and improvements and updated shared Dev4Press library.
Last WordPress update made changes to jQuery support (compatibility library) that caused some issues with GD bbPress Toolbox Pro and adding attachments. If you try to add multiple files, they get replaced with the same file, and some file names don’t get validated properly. These issues are fixed now. The new plugin version also makes some changes to the styling related to some features with BuddyPress. Some of the default plugin settings are updated too.
If you notice any problems with the plugin, stop by the support forums to report it.