Users have complained that they cannot change the access privileges on
folders created in AppleShare 2.0.1. The response received when trying to
change privileges is, "User ID not known". This seems strange, because all
characters are accepted when an account name is defined.
The fix is to ensure that only alphanumeric characters appear in registered
user names. That is, "Albert Cohoe 3933440" works properly, but "Albert
Cohoe: 393-3440" does not.