Using the provided blend file I get the crash after 2 clicks, repeatable.

Thank you very much, Ankit! I wouldn't have known to try this process of elimination you have shown me without your steps. Sorry if this was a bit of a time waster for you, but your help is much appreciated.

That fixed it!!! What does this mean exactly? The specific issue was when trying to use the "Auto-Rig Pro:Smart" option, which is down towards the bottom of the addon's UI. When I would click it, I would get errors and it wouldn't work.

I tried following your steps. I closed blender, I opened the terminal ran blender script, got the error, closed blender, dragged the blender root app to the console and got a short summary. None of which seem to address the addon I am having trouble with, but I see other addons are being mentioned. Does this attached text look like I did everything correctly?

Ankit, I believe the answer is yes, you should enable the addon then run the script. I have asked the developer to step in to help with these questions as this is out of my scope of experience with this. I am attaching a screen shot of the setup I did after removing the tab/space from the pasted script the developer asked me to test. I hope this helps.

Thank you Ankit, when I do that, I chose to "share" the the info in the form of a text in the Notes app. The file says it's 234 MB?!?! I'm not familiar with this side of the things, am I missing something? Not sure how to share this info or specifically what part of the console feedback.

Hello Robert, I ran it again per the above instructions and this is what comes back:

Same issue on my Mac Pro. I also lose ability to edit an object at times. Lights show up fine and can be moved. With Cycles I can some times get the model to show in Rendered View, but not Material and eevee doesn't show in either. I went back to 2.8 just to continue working. I tried the 2.82 Alpha and it was no different.

Thank you very much, Alex. I can only assume I accidentally hit the "i" key without knowing it and added a base keyframe? I have the animation timeline completely hidden, but when I expand it I see one. My apologies for this time wasting effort. I thought for sure I had corrupted my scene.