Possible causes for Access Violation exception in general: An access violation occurs in unmanaged or unsafe code when the code attempts to read or write to memory that has not been allocated, or to which it does not have access. This usually occurs...

Some background about SQL Server Compact: SQL Server Compact is an embedded database implemented in native and it can be accessed in application by either OLEDB or ADO.NET provider model. ADO.NET provider for SQL Server Compact is a managed assembly...