SSRS 2008 R2 - Report Manager - Home page

Hi

I am not sure whether this is linked to my other thread http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/14efcecd-0d7a-4b58-9250-c309d39289a6 but it probably is.  In addition to the drop-down menus missing from Report Manager, the home page when I try to access it gives me an rsInternalError.  The home page contains data-sources etc so I cannot amend anything.  This has not stopped any subscriptions but something somewhere with the configuration of Report Manager is broken. 

Any help much appreciated.

Thanks

Dominic

Dominic