Greetings! Thanks for any help! Before starting, I don't necessarily need a
treatment, I'm really hoping for a diagnosis.

I have a range defined as the following:

=OFFSET(Entries!$E$2,0,0,COUNTA(Entries!$E:$E)-1,1)

It expands each time a payment is entered and column E is the amount field.
Everything is fine to this point.

On a summary page there is a cell totalling the payments, which my
application checks. The formula is:

=IF(ISERROR(rAmount),0,SUM(rAmount))

Everything is still fine... Unless the user enters exactly 2 or 3 payments
throughout the day. One payment works, four payments and up works, but two
or three payments causes the named range to return an error.

Does anyone have any idea what might cause this? For the record, no error
is returned if the formula is changed to

=IF(ISERROR(SUM(rAmount)),0,SUM(rAmount))

Any help is appreciated. Thanks in advance!