¡hola, max!
I think the busted .desktop file happened when I tried to attach the same file to reportbug twice; the .desktop file itself is fine.
But - still no joy. Since you were able to get yours to autostart I'm going to assume that the issue is on my end and most likely in my conky config as it's a little complex; I've tried not daemonizing, starting conky in the background and starting it with no command line options - mine just refuses to start although krunner or a terminal session will start it just fine.