It will take me some time to gain access to a new email and reproduce the error as I essentially set this up for someone else and was hoping to switch it over.
The steps I took are as follows:
I went to Users -> Personal Settings and under Account Details I changed the email address to theirs. It then switches to "There is a pending change of your e-mail to [email redacted]. Cancel".
After receiving the email, the URL is clicked and goes to the wordpress home page. Going back to my dashboard and settings in the same area mentioned above, it will say "Cannot Update Email Address". The exact phrase might be a little different but again, it would take me time to reproduce as I would have to contact the recipient to gain access to the new email. I have taken the above steps three times with the same result.
If the exact error is needed, I will go through the motions again and reproduce the error.