Attributes Manager Not Working

[minuteman1970]

Most of my products & attributes were added correctly via Easypopulate, but were missed on a few items. I thought I would try my hand at using the Attributes Manager feature, but am having some trouble. I can see a neat, organized list of all my attributes along with corresponding check boxes and 'value price' fields. When I check one or more of the boxes to choose a desired attribute and hit the update button at bottom, it does not save my changes, nor report an error. The screen does reflect existing attributes which were previously added via Easypopulate or manually via the 'Products Attributes' screen.

Does anyone know why this might be happening?
Thanks in advance.

[michael_s]

Check the bugtracker first:
183: RC3 Attributes Manager Issue - no attributes aren't selected. - Bug Tracker - open source Commerce Maximized :: osCMax