My Domoticz is using my 3.6.4 Python installation:
2018-02-04 15:17:10.318 Domoticz V3.8875 (c)2012-2018 GizMoCuz



I have some time to look at this now, and I prepared a debug build which should hopefully helps narrow down why the onConnect callback does not work.
Is PM working for you now ...

dnpwwo, I've tested with Python 3.6.4 on Windows, and I don't see the errors Reconos sees. How to debug?
Would it make sense to make a special build with debug prints in CPlugin::Callback to dump the pParams struct?

Reconos, maybe you can double check that Domoticz is actually using your Python ...

Per the workaround, i set everything to English, but it doesn't seem to fix it for me ill try to fiddle around with it a bit and then ill try to update you if anything changes

Im using the latest beta build

Sorry Emontnemery.

Im a long time lurker, and only registered today, so can't PM

I have attached my settings, almost standard.

I know the "activated" checkmark is removed on the screenshot, but that's only to stop it from spamming my log file

Hi Emontnemery.

I hope this is the right place to get some help :)
Setup: Windows 2012r2
Pythons 3.6.4
Domoticz: 3.8871

upon trying to activate the plugin, my log is filled with the following (Hidden in spoler text to prevent massive wall of text):

2018-01-31 14:20:42.003 Error: (MQTT Discovery ...