Hi Jordy,
I am also having this same error. Unfortunately, because it is a huge university multisite currently in use, I cannot turn off all the other plugins as you suggested above when helping the other user. However, I am not sure that is the issue anyway because the error only comes up once the scan has finished scanning 200 posts…the first 200 posts seem to scan fine, but once it hits 200, the error appears and keeps appearing even when I select “Skip this entry”. Any ideas?
Thanks!
I just wanted to post to say thanks so much for this. Just started using WordPress and this problem was driving me nuts! When in doubt… look in Settings.