Cannot View Reports After Upgrading To SSRS 2005

Hello,

We recently did an "in place" upgrade of SQL Server and SSRS 2000 to 2005.

After the upgrade we cannot view the exisiting reports. (although we can publish new reports using the VS2005 Designer and they show up just fine.)

We have SP2 installed for SSRS2005 and all SPs for SQL are up to date.

When we navigate to an existing report via the reporting services website, the report acts like it is trying to run and then returns and error message:
















An internal error occurred on the report server. See the error log for more details. (rsInternalError) Get Online Help

When we look at the logs we see that the report server cannot initialize the stream from the Catalog table.

aspnet_wp!library!1!08/28/2007-16:52:29:: Call to GetPropertiesAction(/Report Administration/All Process Dates, PathBased).
aspnet_wp!chunks!1!08/28/2007-16:52:29:: i INFO: Returning old chunk for: (fd690975-ec5b-4033-9664-81335e3990c0, 'CompiledDefinition', 0)
aspnet_wp!library!1!08/28/2007-16:52:29:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details., Could not initialize stream;
Info: Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details.
aspnet_wp!library!1!08/28/2007-16:53:01:: i INFO: Exception dumped to: C:Program FilesMicrosoft SQL ServerMSSQL.2Reporting ServicesLogFiles flags= ReferencedMemory, AllThreads, SendToWatson
aspnet_wp!chunks!1!08/28/2007-16:53:01:: e ERROR: ### SnapshotConverter(fd690975-ec5b-4033-9664-81335e3990c0, True), Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details.
aspnet_wp!library!1!08/28/2007-16:53:01:: Call to GetSystemPropertiesAction()

We welcome any suggestions.