I managed to install and configure Beryl, but when I start the manager through a console I receive this output:

[root@localhost nazty]# beryl-manager
[root@localhost nazty]#
** (beryl-manager:5414): CRITICAL **: can't execute beryl-xgl: Success

** (beryl-manager:5414): CRITICAL **: can't execute beryl-xgl: Success

** (beryl-manager:5414): CRITICAL **: can't execute beryl-xgl: Success

** (beryl-manager:5414): CRITICAL **: can't execute beryl-xgl: Success

** (beryl-manager:5414): CRITICAL **: can't execute beryl-xgl: Success
Is this normal?


Also, when I start the application itself it works for a while and the 3D cube starts to spin, but I have trouble to configure the application properly.
The themes available in Emerald do not work and I cannot load any image. How do I configure Beryl? Any known solutions to these issues?