Well, the same old thing. Vanilla Runs, but Forge Profiles won't. 
I do have the latest Forge installed, and also a bunch of older ones. Not a single one works. 
I did downgrade Java from 8 to 7 and still nothing. 
I did remove my entire .minecraft folder and installed it anew. 
I did create a new system variable to up the maxium heap of Java memory. 
...and I did read the EAQ and found nothing useful/that I haven't tried. 
  
also, there're no logs. seriously. my latest log after an unsuccessful launch just reads: 
[09:38:33] [Client thread/INFO]: Setting user: GabiLua