CIFS won't mount after update to 4.1.9

After upgrading to 4.1.9 I had no problem with any shares that were both CIFS and AFP previous to the upgrade, but the one share I had that was AFP only was not visible. Adding CIFS to it made it visible in SMB sharing, but unmountable due to a permissions error on either Windows or Mac, any recent version. I tried many things to fix it with no success, until finally I did the following: default CIFS: read/write, guest access on and read/write. AFP same. Also, on advanced tab choose a primary user and give ownership/read/write, choose a group with all users in it, and give read/write, and most importantly, give read/write to "everyone". After that it showed up and I slowly clawed share permissions back to what they were originally, and the share was now visible under original permissions. I tried various combinations of the above, but the only thing that made it visible was doing ALL of it. As I said, after that I could restrict permissions to what they were before, but until I opened it up completely, no go.