id: cannot find name for group ID 500

[lininnex]

I try to add a new user to see if the error goes away but I can't even add a new user..

id: cannot find name for group ID 500
[.@localhost home]$ su
Password:
[root@localhost home]# adduser abc
bash: adduser: command not found
[root@localhost home]# adduser
bash: adduser: command not found
[root@localhost home]# addusr
bash: addusr: command not found
[root@localhost home]# adduser
bash: adduser: command not found
[root@localhost home]# adduser
bash: adduser: command not found
[root@localhost home]# man adduser
Formatting page, please wait...
[root@localhost home]# useradd
bash: useradd: command not found
[root@localhost home]# man adduser
[root@localhost home]# useradd -D
bash: useradd: command not found
[root@localhost home]#

Oh and when I open the home files I get a
"Cannot find parent item file:///home in the tree. Internal error."

[isotrope]

The messages "cannot find name for user ID xxx" or "cannot find name for group ID xxx" can be due to wrong permissions to the /etc/passwd or /etc/group files. Issue these commands to fix the permissions:

chmod 644 /etc/passwd
chmod 644 /etc/group

Regarding the error message you get when trying to add a user this is most certainly caused by the fact that /usr/sbin is not in your path. Use the complete path:
/usr/sbin/useradd

[bigtomrodney]

[.@localhost home]$ su

Did you remove your username or is your username '.' ? Is this the user with UID 500?

Also generally users should have a UID above 1000, below that is reserved for system accounts.

[scm]

I thought Fedora started allocating user and group IDs from 500?