Heel/Toe Shifter

I just installed a MC Enterprises heel/toe shifter on my 2013 Shadow Aero. The installation went smoothly and I adjusted the toe shifter to allow my feet to rest on the floorboard and toes slide under the shifter. Now when I start the engine and shift either into first gear with my toes or even upshift from neutral to second gear, the engine immediately dies. Everything I have done is purely mechanical and not electrical. How do I need to proceed to rectify the problem? Thank you for your help!

LFSATRP
2013 Shadow Aero