spyder.api.exceptions.SpyderAPIError: Plugin "pythonpath_manager" not found!

Hey. Been using spyder/anaconda for years. Just updated anaconda and updated to latest verion of spyder. Now spyder won’t start. it tries to start. It even displays the splash screen and starts loading (or trying to load) things. But then it fails silently. So I ran spyder from the anaconda prompt, got the error message in the subject of this thread:
spyder.api.exceptions.SpyderAPIError: Plugin “pythonpath_manager” not found!

Thanks
Tim

Forgot to say, I used conda for the updates.