If Target.Column = 6 And Target.Value 1 And Target.Offset(0, 2).Value 1
Then
Target.Offset(0, 3).Value = Target.Value - Target.Offset(0, 2).Value
ElseIf Target.Column = 8 And Target.Value 1 And
Target.Offset(0, -2).Value 1 Then
Target.Offset(0, 1).Value = Target.Offset(0, -2).Value - Target.Value
End If

I get the following when entering data in Cell A on a new line:
"Run-Time error '1004'
Application-defined or object-defined error

Any thoughts?
Kevin