Well, that's very strange...I've just done some research and ShellExecuteW is indeed declared with __stdcall in shellapi.h
Bother tell me your Windows version?
Anyway, it's
not "fixed" in 4.00.0102...and there's nothing to fix, I'm using a very standard way provided by Plus! to call ShellExecutew
Anyway, it should open your browser despite the message (it's just a warning, i suppose). Would you tell me if clicking on the links in About window would launch them?