Hello @ersatzcookie,
Thank you for reaching out to the Community to tell us about your issue, though I apologize that you are experiencing this. If you haven't already, please review this support article regarding error CC-501. As stated in the article, you will need to contact Quicken Support directly for further assistance. Our support agents will need to collect and review your log files, and will likely be required to file an escalation if they see fit.Please, click here to review Quicken Support's hours of operation.