The FK installer? I don't even know what that does, but I think it is used when installing drivers or something during setup. Just go into where you put the U.B. Funkeys folder, go into it, click on the RadicaGame folder and finally double click the UBFunkeys.exe file. If you want a shortcut to it just right click on your desktop, go to new, select shortcut, and copy the location of the item which is shown above in the file explorer bar, but instead you could just click on browse and then click your way into the .exe file and set that as the location of the .exe. After that, you have a shortcut like you have had installed it.