New update is out, see http://wiki.maemo.org/Community_SSU/Changelog#T-maemo5 for the Changes.

Note: Install the Operator Name Widget update prior to updating the cssu, otherwise you'll have dependency problems.
It can be safely removed after the cssu update.

edit: using "Update all" does not work.
The sequence is: install the operator name widget update --> update cssu --> remove the operator name widget if you feel like