Today I installed the beta (18.104.22.168) of sql prompt, it installed alongside sql prompt 4. I stopped version 4 and started version 5 before i started Sql Server Management Studio.
The first time I received a message that SQL Prompt 5.0 could not start, Error nubmer 80131509.
I removed sql prompt 4 from the menu and restared SSMS. I received a crashreport:
Unable to cast object of type 'Microsoft.SqlServer.Management.SqlStudio.Explorer.ObjectExplorerService' to 'Microsoft.SqlServer.Management.SqlStudio.Explorer.ContextService'. The crashreport I sent to you.
After that SSMS started, SQL Prompt 4 is disabled and SQL Prompt 5 is there and seems to work. When I stop SSMS and restart it, I get the same error again.
I use Windows 7 64-bit Ultimate, SQL 2008-R2.