Have been getting the CC-601 error for Paypal whenever I do a download.
The error states that it cannot find a non-zero balance or with any transactions in the last 12 months, but the Online Balance actually changes to the wrong actual balance after a download.
When I reset the account, the Online Balance posts correctly (no CC-601 error), but no transactions are downloaded with it. The next day when I download, I get the CC-601 error and the Online Balance changes to the wrong balance again.
So, even though the error states that it cannot find anything, it is changing the Online Balance.
Have reported this error 2X but it still persists.