Windows phone 8.1, no mouse input in VS simulator.

Hello, I just installed Visual studio Express 2013 with update 4 and try to build for windows phone. If I build for 8.0 the app will open normally in simulator and I can use the mouse to play. If I build for 8.1( phone or universal) I can't use the mouse in vs simulator.Any one , does know why this is happen ? Should I use some specific settings when I build in unity? There is also that issue with the icons(is impossible to set up icon in unity for windows phone 8.0) if so how can I set up an icon and where, in visual studio express? Please give me some answers. I lost many hours trying to figure this out.