Problem
An error message similar to one of the following:
Invalid provider type. [Db version = 0,Requested version = 1,File name = OfflineDb.sdf]
System.Data.SqlServerCe.SqlCeException (0x80004005): Invalid provider type. [ Db version = 0,Requested version = 1,File name = OfflineDb.sdf ]
Cause
Offline synchronization must be set up for the Native Client.
Solution
Delete the offline DB under %appdata%/MATESO/Password Safe and Repository Client/OfflineDB and restart the synchronization process in Native client under File->Account->Start Offline Synchronization