I've had great results with the new Profoto A1, which is an event shooter's dream flash, beautiful light, massive capacity, and instantaneous flash recycling. I realize there are many Profoto haters out there, but for my event shooting, I've been extremely pleased with the A1 on a Canon as well as on a flash bracket using a Profoto Sony trigger.
I'm using a Leica CL as a backup (small, light, wonderful quality TL lenses, excellent higher ISO performance) and wanted to see how the Profoto A1 would work (in manual mode, of course) on the CL. According to Profoto, all you need is a flash shoe/foot with a single center pin, which the CL has. But no matter what configuration I try (and, yes, with the manual switch on the A1 turned on), the flash will not fire. Leica's regular SF40 and 60 flashes work just fine, so I know that flash functionality isn't a problem.
Any one have any suggestions?