It appears my original problem has reoccured, I don't know why. The Divinity Engine 2 editor ran fine for a couple days after my system restore and now the project settings button once again does nothing. Here's the end of my errors.txt file if anyone wanted to see that.
I have no interest in continueing to try to solve the problem this time around. I feel I have wasted enough time on it previously and I will wait for a few months before I attempt to mod for Div2 again. Maybe some of these bugs or glitches or whatever they are will be resolved by then.
[20-10-2017 00:29:41:973][..\Util.cpp 35 LSFrameworkPlugin::Helpers::Error]: CRITICAL ERROR!
Unhandled exception!
Exception Type: System.ArgumentException
Description: An item with the same key has already been added.
StackTrace:
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at EoCPlugin.ProjectPlugin.DescFromSettings(ModSettings settings)
at EoCPlugin.ProjectPlugin.OpenSettings(Object sender, EventArgs e)
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs
Thanks again to all those who tried to help, much appreciated. o7