I remember solving that problem a long time ago, and it was indeed something in the CodeCompletion plugin. I found the right place to work on by disabling sections of code called when the plugin was initialized. It took some time, but I found a work around. Now, I don't remember what was that section that had to be edited. However, something tells me it's one where I added a variable, so that section of code wouldn't be called on plugin initialization on Windows. Could anyone please check?