I have an old song that I made that reverts to MIDI because the correct RealTracks set is not installed. BiaB 2014 says promisa.sty is missing. The thing is that I don't have enough space on my computer to install all my sets and I'd like to avoid trial and error by installing/uninstalling one set at a time.

Can I find this out somehow or maybe someone here happens to know from which set promisa.sty comes?