>*******************************************
>WAIT WINDOW "Creating class cboRexClLookUp" NOWAIT
>loObject = SUBCLASS("RexLookUp","RexCL","cboRexCLLookUp","RexCl")
>
>WITH loObject
> .RowSource = "v_RexClLookUp.cName,iId"
>ENDWITH
>
>ACTIVATE WINDOW "Class Designer"
>KEYBOARD "{Ctrl+W}"
>
>
>set classlib to RexCl additive

I haven't tried you code, but you might want to give VFP a second to close the file... try an INKEY(2) after the KEYBOARD.