Midi Multi-Instrument issue LX/Yosemite

HI,

Been getting odd midi crashes since yosemite associated with the midi Multi Instruments connected various ways (to ViennaEP, hardware,..). Every hour or so the ports on the graphic boxes turn white, then Logic's Undo takes several seconds and requires a restart. Some of the boxes are connected to channel hosted ViennaEPs, some go straight out to MidiOverLan. Behavior occurs without any connections as well,. Are these Multi-Instrument midi boxes becoming a known issue for anyone else. I've used them for years.

Thanks, (snapshot below)

Mark