"Digital Feedback" using MultiBD?

Bought and installed the Dynamic Pack to my SQ6 yesterday. When I tested to insert a Multi band compression (Tighten mix) to my main mix, I noticed the main mix started to peak. Nothing was attached to the mixer and all channels where muted. After some experimenting I found out that at a certain level of the main mix fader the system created a feedback (~-10db)?

Any ideas on what i´m doing wrong?

/Stefan

Hey @steh1973,

Please send you show file to use using support.allen-heath.com and we can look into this for you.

Thanks!
Keith.