I just bought a brand new PP2+ and set it up but as soon as i switched it on it fried my Electro-Harmonix Nano Small Stone. It's a 9volt centre negative connection. Is there a compatibility issue with these pedals? Russ

The Nano Small Stone should be able to be powered from any Pedal Power 2+ output with the DIP switch set to Normal using the standard barrel cable. What output did you use, what were the DIP switch settings for that output, and what cable did you use?

I just had the same kind of issue... been powering my SSN for about 2 years with no issue with one spot chain, and it stopped working plugging the power 2 plus (input 1 or 8 set to normal with any of the supplied normal cables..) weirdest thing is that it still works with battery but not anymore with power adapters...