Brainworx Crash after insert

For some time now, I get this crash when I insert a Brainworx plugin on a montage master, and move it to a different position.

For me, I normally use Brainworx bx_control V2 to produce the problem and I can reproduce it quite regularly.

OSX 10.9.5
WL 8.5.20
64-bit
VST-3

Crash log attached:
WaveLab 8.5_2015-02-15-150449_Mystery-Room-iMac.crash.zip (25.5 KB)