ZWave starts off ok, but after several hours devices all die

Running the latest zwave-1.10.0-SNAPSHOT with a zwave network of 48 devices. When I start openHAB it takes a while, but in habmin all devices except 3 locks turn green with a few yellows. Normally it will stay like that for anywhere from an hour to several hours until not start turning red with dead true. Almost all my devices work as repeaters and I even have 5 DSD37 range extenders in the network. The only devices that are battery powered are 7 YRD220 deadbolts.

Any ideas?