I'm getting error messages when loading certain data to a sandbox to test
the NPO Starter Pack packages using the Data Loader. I'm forcing the
creation of One2One accounts for a subset of Contacts by setting the
Contact.AccountId field for these records to a null value. This has worked
beautifully for hundreds of Contacts so far, but the remaining ~100
Contacts are throwing either one of these two error messages:

npe01.IndividualAccounts: execution of BeforeUpdate
caused by: System.ListException: List index out of bounds: 99
(npe01)

npe01.IndividualAccounts: execution of BeforeUpdate
caused by: System.ListException: List index out of bounds: 22
(npe01)

When I go to one of these error-throwing Contact records via the browser
and delete the Account Name, it works fine. It just doesn't seem to work
for these Contacts when doing it through the Data Loader. A spot check of a
handful of these records hasn't revealed a pattern.

I've got all five of the packages installed and am on the latest version of
the Contacts & Organizations package (0.7.9.5).

Any ideas of what might be causing this?

Thanks,
Seth Schneider