** (beryl-manager:6606): CRITICAL **: can't execute beryl-xgl: Success

If you get the following error when trying to launch beryl-manager with KDE on Kbuntu 7.04 (Feisty) (likely with an ATI card from what I am reading):

** (beryl-manager:6606): CRITICAL **: can't execute beryl-xgl: Success

The problem most likely has to do with this bug:

https://bugs.launchpad.net/ubuntu/+source/beryl-core/+bug/95394

Which basically states that beryl-xgl was removed from beryl-core package due to how it is built.