Bob,

The two should have worked with MHR. I never rolled back from V2.5 to V2.12 in my 568.2mm. Never wanted to because V2.5 is so much better sounding and much more stable. In fact V2.5 and the 568.2mm is the most stable product I have ever owned from Meridian next to my 518 which has been perfect as well. My 568.2mm hasn't crashed or behaved badly ever since I installed V2.5 and thats been quite a long time now.

Ron

HT: 568.2mm (Revelation One filter), 518x2, SB3, Bryston 7BSTx3, 8BST, Aerial 10T, CC3, SW12(Qty2) w/SVS AS-EQ1, MK Tripole x4. JVC RS1u, DVDO Duo, Oppo 103 w/Vanity103HD, Sony PS3, VIP 3D Theatre, Acer H5360. Logitech Ultimate Remote and Hub.