I just received a Flashpoint R2 trigger/receiver set today which I plan to use with both my Sigma TTL flash to replace the TTL cable on my field macro rig, and as a trigger for a couple of Flashpoint strobes for indoor macro when they come off of back order.
I cannot make the flash work from the receiver, not even with the test button on the receiver. The flash works, both from its own test button and from the camera (Canon T4i) with the cable.
Addendum:. I forgot to mention that when the flash is on, the display on the receiver blinks on and off.
Any suggestions?

