Howdy,
Seems that RTAS plugin projects generated by the Introjucer are Windows are broken (paths in project are incorrect).
See https://github.com/julianstorer/JUCE/commit/a9aae9651b4839aa3a47eefeb31cbe0d858dd731#commitcomment-4691579
Cheers, Yair
Thanks! Should be fixed now.