[GNC] Error in Advanced Portfolio

[Fred Tydeman]

When I run an Advanced Portfolio report, I am getting:

There is an error processing the transaction 'spinoff of 0.00 currency
units'. This may to be caused by a sell transaction causing a negative
stock balance, and a subsequent buy transaction causing a zero balance.
This leads to a division-by-zero error. It can be fixed by preventing
negative stock balances.

One way to find out which security is to start picking subsets of accounts.
Is there a better way to find out which security it is complaining about?