I'm running SMF 1.1 RC2. I just installed SMFShop, but it doesn't show up in any theme except for the default one. The shop button doesn't appear (and I checked: it's not just that the there's no image), the stats in the user info next to posts don't show up, etc.
I tried going to action=shop, and that works (sort of, it kinda screws up the page a bit, but I'm checking that out to see what's causing it)
I have the Cerberus theme installed, and I'd rather not force everyone to use the default theme...