Hi Ron! Wow, well done for figuring that out! As for your question on removing the zmq folder, *deep breath*, ok, so normally if you are re-installing the blender application, you don't need to re-install the addons. The addons like ours that you install as extras (not the ones that come with blender) live in a different location and are meant to persist between blender installs.

You can delete the addons folder in your user\AppData\Roaming\Blender Foundation\2.79\scripts folder if you like, and just reinstall all your addons if you feel more at ease doing it this way, but all this does is put back the files into the same location as they would have been.

One obversvation though, the msi installer put your files into a folder that had blender-2.79-windows64? was that in \AppData\Roaming\Blender Foundation\? If so, that is a bit odd. I'll have to try this myself! Normally I would expect the version of blender to just say 2.79 or 2.79.1

In any case, congratulations for getting this to work, if you hit any other issues, feel free to come back to the forum for help :D

James: Think I've figured it out. When I installed the "a" update to 2.79, I used the *.msi install file. This created a new directory for blender call "blender-2.79-windows64". That folder contains a second folder named "2.79" but the installer left the "old" 2.79 folder in the Blender Foundation root folder as well. I renamed the "old" 2.79 folder to 2.79old, then copied the other 2.79 from the "blender-2.79-windows64" folder up one level to the Blender Foundation root. I fired up Blender, got a bunch of "duplicate add-ons" in the user window, but scrolled down to the Crowdrender and checked the ACTVATE box. Blender reported that CrowdRender was successfully installed and I can see and use it in the "render tab'

I think I'm going to have to do a clean install of 2.79a ... and probably all my add-ons ;-{( . . . to keep blender from getting confused about which script location is should be using. Not a big deal really.

I did find the 'zmq' script folder in my "C:\Users\rkoch\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons' folder. Know it's not your issue, but do I need to delete that folder when I do my clean install?

Anyway, for now I've got it working with a pretty messed up install structure ... I'll let you know how things go.

Thanks for you help

RonK

Wow: didn't get ANYTHING like what you got: Here's what the sys.path returned:

'D:\\Blender Foundation\\blender-2.79-windows64\\2.79\\scripts\\addons_contrib',

'D:\\Blender Foundation\\2.79\\scripts\\addons_contrib',

'D:\\Blender Foundation\\blender-2.79-windows64\\2.79\\scripts\\addons',

'C:\\Users\\rkoch\\AppData\\Roaming\\Blender Foundation\\Blender\\2.79\\scripts\\addons',

'D:\\Blender Foundation\\blender-2.79-windows64\\2.79\\scripts\\modules',

'D:\\Blender Foundation\\blender-2.79-windows64\\2.79\\scripts\\startup',

'D:\\Blender Foundation\\2.79\\scripts\\startup',

'D:\\Blender Foundation\\2.79\\scripts\\modules',

'D:\\Blender Foundation\\python35.zip',

'D:\\Blender Foundation\\2.79\\python\\DLLs',

'D:\\Blender Foundation\\2.79\\python\\lib',

'D:\\Blender Foundation',

'D:\\Blender Foundation\\2.79\\python',

'D:\\Blender Foundation\\2.79\\python\\lib\\site-packages',

'D:\\Blender Foundation\\2.79\\scripts\\freestyle\\modules',

'D:\\Blender Foundation\\2.79\\scripts\\addons\\modules',

'C:\\Users\\rkoch\\AppData\\Roaming\\Blender Foundation\\Blender\\2.79\\scripts\\addons\\modules'

Hi Ron :), well you don't seem to be doing anything wrong as far as the error trace reveals, also the addon should be compatible with 2.79a on windows, though I will test that today to make sure ( I use a mac mostly but we have all three OS types here in the lab).

If you could try something for me that would be awesome, the complaint in the error needs investigating, it is claiming it can't find part of our addon. It would be good to make sure it is there.

So if you could open the python console in blender (you can do this by setting your screen to "scripting" using the drop down menu at the top of blender's gui) and run the following commands that would be great:

>>>import sys

>>>sys.path

You should get something that looks like this appear in the python console

['/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/addons_contrib', '/Users/jamesmac/Library/Application Support/Blender/2.79/scripts/addons', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/addons', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/startup', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/modules', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/python/lib/python35.zip', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/python/lib/python3.5', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/python/lib/python3.5/plat-darwin', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/python/lib/python3.5/lib-dynload', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/python/lib/python3.5/site-packages', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/freestyle/modules', '/Applications/Blender/2.79/blender.app/Contents/Resources/2.79/scripts/addons/modules', '/Users/jamesmac/Library/Application Support/Blender/2.79/scripts/addons/modules', '/Users/jamesmac/Library/Application Support/Blender/2.79/scripts/addons/crowdrender/lib/Darwin/3_5']

For me, the last line is put there by crowdrender to make sure that the zmq module can be found, so it would be good to check that it is there on your system :). If you can reply to this post with the results of the commands above, it will be great as I can verify if you have the correct path.

Kind Regards

JAmes

Oh, I'm using Blender Version 2.79a ... forgot to mention that ...RonK95