IPAC4 and simultaneous lshift/rshift lctrl/rctrl

[drventure]

I'm having a very peculiar problem with my IPAC4.

Basically, If i press and hold the LCTRL button, the RCTRL won't press., same with shift.

But, every other key appears to work just fine when pressed simultaneously with a second key.

The actual "shift" key is mapped to player1 start, which is just "1" so that doesn't appear to be a factor.

I've tried redownloading the keymappings several times and that process works, but the keys still don't press in combination.

I've also unloaded or disabled every background app I can think of that might effect this (Autohotkey, 3rvx, etc).

Still no luck.

Anyone else run into anything like this? I thought maybe there was a flash update available for the IPAC but I didn't see one on Ultimarcs site.