When you upgrade SQL Server 2005 to SP1 you may receive the following error when you initialise Reporting Services:
The version of the report server database is either in a format that is not valid, or it cannot be read. The found version is ‘C.0.8.40’. The expected version is ‘C.0.8.43’. To continue, update the version of the report server database and verify access rights. (rsInvalidReportServerDatabase)
In order to resolve this you can follow the steps below:
1. Connect to the report server using the Reporting Services Configuration
2. Select Database Setup from the navigation pane
3. Click the Upgrade button
