I use C:\DVB\ProgDVB for installation. Usually the update installs by default in the same location, so i don't check the path

This one installed default in C:\Program Files\ProgDVB and i didn't noticed. Since the shortcut was updated, it worked, but it was in another folder and thus without registration key, disecq setup and all the other things.
Reinstalled again over the old path and everything is working ok.
So the only issue is: Update does not default to the existing ProgDVB folder...