No matter if it's (6/13), (6/100), etc. all of a sudden mp3tag always becomes unresponsive and hangs indefinitely on the 6th tag. I've tried tagging files in different files and on different drives. I've tried reinstalling. I'm using 32bit on win11. Have used the program successfully for a long time. Issue started sometime after installing new version.
You may have been on to something with the Windows Defender suggestion. I made a pair of blanket inbound and outbound firewall rules, restarted the computer, and added the directory with all the files I'm trying to tag to the library. One of those things seems to have fixed the issue. Thank you very much.