first off thanks for the great software
just a quick note to say that i tried to auto run cumulus in task scheduler as advised in the faq i think, it ran fine but no visible icons anywhere to change settings.
I then created a desktop shortcut and set that to run cumulus minimized and then moved it to the startup folder, rebooted pc and cumulus auto ran no problem and no uac warnings.
In my case it seems the simplest solution was the right one