tried every SP1, there is
1) Visual Studio 2008 SP1 - already installed , re-installed on top
2) Microsoft SQL Server Compact 3.5 Service Pack 1 and Synchronization Services for ADO.NET version 1.0 Service Pack 1 for Windows Desktop
already installed - repaired on top
3) Microsoft SQL Server Compact 3.5 Service Pack 1 for Windows Mobile
already installed
4) Microsoft SQL Server Compact 3.5 Service Pack 1 Server Tools
re-installed / repaired