The installer creates an "=App" folder and within a "mumble" folder in the base directory. I noticed this while installing Mumble via the PA.c Platform and merging it into my branch. I downloaded the package from Sourceforge directly, installed it and the same thing happens. So I checked the package but there is no such folder. AFAIR this isn't the first time this is happening. Is it just me or is something wrong with the installer?
