I'm using Parallels Desktop 10 on my Mac running OS X Yosemite. The problem I'm facing that that I cannot bind [Option]+[Backspace] on to do [Control]+[Backspace] on Windows...which I'm running Windows 8.1 if that helps. I can bind other combinations just not [Option]+[Backspace]...which is weird. I just want a seamless typing experience when switching between the two platforms....ugh please help!