Terraria Community Forums

If your friend has had a player deleted and needs to recover it you can visit this thread and go down to the bottom to find out what solutions are available to your friend. https://forums.terraria.org/index.php?threads/troubleshooting-terraria-issues.329/

@Grumpy Squid The error message that was thrown:

1/20/2019 9:35:05 PM
System.InvalidOperationException: Collection was modified; enumeration operation may not execute.
at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
at System.Collections.Generic.List`1.Enumerator.MoveNextRare()
... etc.

Does that help?

@Grumpy Squid Solution #4 worked for me. Thanks a ton! :)