I'm having trouble with the Unity / OUYA plugin.

I'm using Unity 4 with the latest update on a Windows 7 machine.

When I open the starter kit and try to compile the plugin I get the following error:

Picked up _JAVA_OPTIONS: -Xmx512M

And if I try to Build and Run I get this error:

Error building Player: ArgumentException: Illegal characters in path.

I'm stumped, I've gone through lots of forum posts here and on stackoverflow and I can't seem to resolve it.

My environment variables look like this:

PATH - C:\Users\dave\Documents\adt-bundle-windows-x86_64-20130219\sdk\tools;
       C:\Users\dave\Documents\adt-bundle-windows-x86_64-20130219\sdk\platform-tools\

JAVA_HOME - C:\Program Files (x86)\Java\jdk1.6.0_45\

Everything in the OUYA Panel is white

Any ideas?