Yeah, these are problems with using the Dropbox to share presets that aren't really resolvable. You can look at the file size and use that to guess whether it's a preset or a preset list. But there's no way of knowing from an syx file what Factor pedal it came from if the contributor didn't name it or put in in a folder that made that clear. We're working on a solution to replace the Dropbox preset sharing with something better that avoids these problems.
