I got the Fidelity cc-501 error yesterday, but that's gone now. Today I hoped to successfully download, but that didn't work. I have 7 accounts at fidelity, and on just one of them, it said "CC-506 error. Quicken is unable to update your account. This may be because the account was closed, or its nickname was changed." The account was not closed, nor its nickname changed. However, it did download transactions for the account.
But for all the accounts, it downloaded transactions from August through now, just like it did with the change in interface recently. Now what?