I too am experiencing error 2448. I have a subform embedded in a master form. When I decouple and use just the subform the error does not appear. If I click ok when the error appears, then data entry proceeds normally with no apparent problem. My first thought was that it was field related but I removed the field that was apparently causing the problem but the same error occurred with the next field on the form. Here are some factoids about this problem
1. It occurs only when the first record is entered in a series of entries. After the first time in a session it does not appear again.
2. It occurs whether using CTRL+ or add record button.
3. Removing field formatting doesn't make a difference.
4. Master and child fields are linked
5. It occurs whether I remove any event code or not.
6. I can get by with ignoring the error with
Private Sub Form_Error(DataErr As Integer, Response As Integer)
If DataErr = 2448 Then Response = False
End Sub
with no apparent ill effect on the data.
Still scratching my head!
Rick Hurst
Webs 4 Everyone
http://www.webs4everyone.com