title: "ilc.exe" exit code 1104 when compiling in "Release" mode
body: <p>I'm getting only this error (1104) when I build my UWP app in "Release" mode (only in x86) so I can't create app packages...In debug and Release (x64) modes works perfectly. 
  Any idea of what's causing this issue and how can I solve it?<br>
  Thanks!</p>