Thank you for your help. I was able to delete the admin course and re-add it using the full path to the adminClasslist.lst and I was then able to log in. I noticed it deleted all the admin tables from the webwork database and re-added them, but the majority still seem to be empty. I think this is expected and things now seem to be running smoothly at the moment.
Arnie, I will try looking at the Ubuntu instructions for next steps.
Thanks to you both!
Problems with Course Administration link
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