I have been a Quicken user since it became available for the Mac. Last year I upgraded to the business version to better support my business finances. Since Early December I have not been able to connect Quicken to Citizens Bank because of error 501. I deleted the connection and have repeatedly tried to set it up again and always get the error: "Authentication Error Occurred - Missing flow parameter BodyParam code in AuthZGrantSpec". I have reported this problem multiple times with no response from Quicken support. It makes managing my business finances much more difficult and may need to seriously consider alternative systems.