Issue with the dashboard

[quantumm]

Hi !

I tried this plugin with Ocean Optics USB4000 spectrometer and it works fine if I use it from a daq_viewer for exemple.
But if then I try to launch a dashboard then a window appears with this error

OIeInitialize failed

I am sure it comes from this plugin since when I uninstall it the dashboard runs perfectly.

My system :

Windows 10
pymodaq 3.1.2

[rgeneaux]

Hi,
I encountered this issue with several plugins, and it does get triggered only by the dashboard.
I think it has to do with a conflict between Qt and import clr. I got it fixed by following pythonnet/pythonnet#439
and adding this:

import pythoncom
pythoncom.CoInitialize()

at the very beginning of daq_1Dviewer_Omnidriver.py

(get the pythoncom module by pip install pywin32)
It does the job for now, but it is not ideal to add this to all plugins that use clr, we should try to fix it in pymodaq itself!

[seb5g]

Hi,
It is indeed a new problem that appeared also when using the thorlabs plugins (also using pythonnet and import clr)
I tried to track it down and already found one issue in the viewer where a direct import :
from PyQt5 import Qt
was generating the error
I patched this in the 3.1.3 version however some issues remains. Please test it like this (without the pythoncom.CoInitialize() ) and let us know!

[seb5g]

by the way this overall issue can be completely removed if you start directly with the DAQ_Scan (you just have to enter in the config file the correct preset). It's not a perfect way but...

[seb5g]

This is now taken care of at initialization of pymodaq. It only require to install the pywin32 package containing "pythoncom"