Update....after some experimentation I found that sources other than my usual PC with JRiver didn't cause the AVR to cut out.I realized I had used the DSP feature in JRiver to tweak my sound and it was apparently conflicting with the Axiom DSP. Disabled all JRiver DSP functions and all seems to be fine now.Go figure!

LFR 1100s QS8s QS2s ADA15000-4, VP 150, M 3s,Polk CSI A6, Klipsh B10B, SVSPB2000,PSW125x2