[VBA]Private Sub cmdPriorRecord_Click()
On Error GoTo Err_cmdPriorRecord_Click
DoCmd.GoToRecord , , acPrevious
Exit_cmdPriorRecord_Click:
Exit Sub
Err_cmdPriorRecord_Click:
MsgBox Err.Description
Resume Exit_cmdPriorRecord_Click

End Sub[/VBA]

Why does this error when it is at the first record in my form?