Description of problem:
After auto attach a subscription for the system, open rhsm gui preferences dialog will get an error message.   

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

RHEL7.0-everything-20131127.1-x86_64
subscription-manager-gui-1.10.6-1.el7
subscription-manager-firstboot-1.10.6-1.el7
subscription-manager-1.10.6-1.el7
python-rhsm-1.10.6-1.el7


How reproducible:
always

Steps to Reproduce:
1.Register the system with username “rhel7beta"
2.Open subscription-manager-gui and open the Preferences window ("System -> Preferences" or just press "Ctrl+P"), and now the window can be opened successfully.
3.go to "My Installed Products" tab, press "Auto-attach" button and follow the pages to auto attach a subscriptoin.
4.open the Preferences window again.

Actual results:
An error message window shows and it says "Error in preferences dialog, Please see /var/log/rhsm/rhsm.log for more information" 
please see the screen shot, and the rhsm.log in the attachment.

Expected results:
The preferences window should show.

Additional info: