I am no fan of the new Externals system. One, I just would never have changed it without compatibility. Two, nobody used it so nobody cares. Three, every external was written for the old system so why would you ever change it. I don't get it. Just causes problems. In principle, I could take the clean 3.5.11 code and just switch it back to the old Externals system. That can't be more than a day or two of work as the old external system looks like what I added originally anyway. Call it 3.5.12. The serial number code was extracted and removed a while ago, so it would be a nice clean final release assuming nobody cares about Python. Since I am not running the old Support BBS yet, my ability to test is very limited though.