I recently had an issue when I created a site and wanted to use unique permissions.
You will then get this dialog displayed. This dialog can also be display for any site by appending /_layouts/permsetup.aspx
Unfortunately we got this error when pressing OK.
The error was related to the SharePoint 2010 version we used which in our case was 14.0.6106.5002.
How to find your SharePoint version
Open CA –> System Settings –> Manage servers in this farm.
You can find the different SharePoint 2010 versions here. http://todd-carter.com/sharepoint-versions/
In order to fix it we installed the August 2011 CU. You can find the different SharePoint 2010 versions here with links to the hot fix also http://todd-carter.com/sharepoint-versions/. Remeber to use the correct server edition foundation or server
Etiketter: SharePoint 2010