Trust-no-exe was not the problem. i tried to open it with loader and nothing. I take a peek in Process explorer: Kmeleon is not using any CPU at all but I couldn't shut it down. I tried that with Anvir task Manager and managed to crash the comp. When I restarted, I deleted Anvir, Kmeleon worked O.K.
I too think there is something wrong with one of the files from the newest version.