eleven rack giving white noise

[kublai.khan]

hey guys I'm using my avid eleven rack with protools11. I'm using the preamp part only (guitar input) and using my eleven rack input on a separate channel)...im doing that as i use recabinet 4 demo to create different tones so i can later blend them with eleven rack tones. however the problem I'm having is that I'm frequently hearing a few seconds of white noise every time i either change a setting on either the eleven rack channel or in the recabinet channel and even when i start to play my guitar....can anyone help? any ideas? I'm thinking the problem is with the eleven rack but i don't know what to do...

[kublai.khan]

ok sorry i just figured it out. if you are having the same problem its because the demo version of recabinet 4 has bursts of white noise as the only restriction. i thought my interface was going caput @!!!!!! jeez sorry guys