Nothing changed. If you use patched oscam, patched dvbapinet and patched ffdecsa (or use the setup which contains everything), everything should work...
And you should know what triggered it if you changed something...I can not magically change something on your installation from remote, sky did not change anything.
If it suddenly stopped working without any change from your side and you happen to not use local cards, ask your provider what to do, not my problem.