Got a CC501 after updating QW to the latest release (R49.33). FAQ says to contact Quicken Support but all that does is send me here. Online update stuck at "Updating Account" in all accounts and no way of aborting the process.
Update: Force quit Quicken and reloaded. Tried updating individual FI accounts one at a time. They all worked (3 different banks) but Schwab froze and I got a CC501 again.