Can anyone help ? I've been working on a project for some time using several ADO's, to control looking at retrieved recordsets, using embedded S.Q.L. in the source code. It was working perfectly, creating variables for reference as System data types, i.e. 'Dim MyDb As Database', and 'Dim r1 As Recordset' etc. However, now when I attempt to run it, (and I've only moved some files around, which I've done before with no problem), it throws up error messages saying 'User Data Type not defined. It seems to be at a inner level of the V.B.6 software, as after typing the 'As' in the 'Dim' statement, wheras normally it lists all the options for 'Data Types', Database and Recordset are not included. Please Help. Liam.