Parser Error Message
Could not load file or assembly "System Web Extensions. Version - ...
If you see this error as soon as you open ControlPoint, the applicable version of the .NET Framework has not been installed on all of the Web front-end servers in your farm.
Make sure the version of the .NET Framework that is appropriate for your SharePoint version is installed on all Web front-end servers in your farm. It is typically installed on the first server as part of the ControlPoint installation. You can install it on additional servers (as well as on the first server if this step was skipped during the ControlPoint installation process) by following the procedure for Configuring ControlPoint for Additional Web Front-End Servers.
During your current ControlPoint session, an action you performed (such as a Delete Site, Set User Permissions, or Add User to Group) isn't reflected in the SharePoint Hierarchy.
·Try Refreshing the SharePoint Hierarchy.
·If a site collection has been added or deleted and the ControlPoint Application Administrator has configured the application to load site collections from a server-side cache, you may try refreshing this cache.