Ubik, Authors have to have the exact same spelling and these don't. One of them has (editor) as part of their name. That's why they won't merge. If they are the same person, change James L. Halperin (editor) to James L. Halperin, and then merge. As usual, then combine any books that need combining.
I've seen something like this before, actually -- check if "James L. Halperin" and "James L. Halperin (editor)" are both listed as authors on some record. If they are, you can't combine the authors because that would give duplicate authors to that record.
(I know we used to be able to do that, but the new author system is stricter.)
James L. Halperin
James L. Halperin (editor)
When I try to merge these two profiles, I get an unexpeceted error occurred. Ive been trying since last night