For my work I need to keep compatible all the way down to XP
now (sigil) and some other app (since forgotten for something else that worked better and was portable and compatible )
the upgrader has without warning just blasted in a version incompatible with the system it's being run on even ...xp sp3
would it really be impossible or even hard to put in a 'maintain compatability' with xp,vista,7,8,10 like a selector switch in advanced options
or at least have a warning in the upgrader as 'compatible with xp/vista/7/8/10' (or as the case may be) 'compatible with vista/7/8/10'
so yes this is a request for a feature i guess