UPDATE:
There is now a Patch_2.4 which is very important. You can download it here:
http://www.mediafire.com/?z1ylxqy3yix
This changes all the new items for Bards and Gadgeteers, because game code was not recognising the upgrades as they were.
You can read more about this and 2 other changes in the readme file.
This patch is only to be applied to installed mod version_2.3