License server error 500

[Ernst]

I'm getting the 'server error 500' as well:

License server error 500: [b20cad9b] Too many matching activation records; resetting to Starter Edition
License server error 500: [7df89c10] Too many matching activation records; resetting to Starter Edition

I'm running two instances of minimserver on a linux box.
The error occured after, in one mighty plunge, I
1) extended my license
2) upgraded from minimserver 2.1.2 to version 2.2
3) moved one of my instances from /opt/minimserver to /opt/minimserver-1/minimserver

I tried removing the license files from post #11, but that didn't help.
TIA for your help.