I've just set up a teamspeak 3 server. All channels have been made and everything. I went to start adding all my groups and what not, Added all of them successfully. I went to change the icon image for the groups and it said "insufficient permission modify power"

- I have server admin and all permissions to edit > https://gyazo.com/71251c3dcc718fe2afcb20bfc6f8fada
- I have not tampered with ANY of the permissions in the server admin group. Only the name.
Please help me as i need to get this ts up and running asap.
Thanks