The issue is solved. For some reason (a small blunder I would say) we did not 'wrap' the connection in the function that we will normally use (and which reconnects automatically whenever a connection is lost). We do that now. Expect RC4 tonight with the fix. If you are in urgent need just give us 1/2 hour more for testing and I can PM you a link …
However when working with your server from the IDE/debugging environment we can see that a SSH-tunnel connection to your server is frequently lost and even the most simple operations often require several reconnects. This is unusual and should
ot be like that!