While porting gradebook to 6.x, I noticed some problems with the 5.x-1.x-dev version and posted some patches that should address the problem. Right now I am just working on Drupal 6 platforms, so I can't test the patches myself. If you would like to help us get to an official 5.x.1.0 release, here is what needs to happen:

  1. Download the 5.x-1.x-dev code
  2. Apply the patch in #340596: misc coding errors in gradebook module files comment #7
  3. Follow the directions in the documentation - it was written for 6.x.1.x, but should more or less apply to the 5.x branch as well.
  4. Report back with whatever errors you find and/or submit additional patches if you can.

Thanks!