Annoying kybd, dr. mach., click thru midi/usb i-face

[Illogical Captain]

Recently tried to interface two different Yamaha drum machines to LogicPro9, thru a brand new M-audio interface connection. Getting a click, or pop , sound with each real sound. Pop is not part of the Kit on the Logic channel, nor is it a computer alert sound. Always the same volume. Hooking up a keyboard, the click happens on key release.

What's happening? Anybody got a clue?
Thanks
Bud
MacBookPro, 10.6.8

 

[Illogical Captain]

Pop goes the Click weasel

Hey Illogical,
This is Illogical.....other brain.

Problem of click/pop solved.
Download latest driver for M-audio interface, Uno,
and away goes the pop.

So Logical.

On to the next problem , and beyond.
Bud