Description of problem:
During package selection, an unhandled exception occurs if the right mouse
button is clicked on any package group.

Version-Release number of selected component (if applicable):
anaconda-10.92.5-1

How reproducible:
always

Steps to Reproduce:
1. Begin a new installation and proceed to the point of customizing the package
selection.
2. In the first screen that comes up, right-click on the "Gnome" package group.
  
Actual results:
The installer crashes with an unhandled exception.

Expected results:
The installer should either ignore the click or do something useful.

Additional info: