Only The "Render Controls" UI appears

Blender 2.79

Crowdrender 0.1.2

Windows 8.1

I have 3 HP desktops, 1st connected through USB wifi adapter , the other two are through cable to the same router.

I successfully installed Crowdrender in the 1st machine , however the other two had the same issue.

and this error:

Traceback (most recent call last):

File "/Users/jamesmac/Desktop/cr_compile/releases/multi OS releases/crowdrender/src/cr/ui_panels.py", line 234, in draw

AttributeError: module 'crowdrender.src.bl_2_79.client' has no attribute 'cr_client'

location: <unknown location>:-1

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