I have the most recent version of SimpleClans and also Essentials /nick would work before I used SimpleClans but now after installing it it says that the Nick has changed but does not show it in chat. It will only show when you press tab or /list so I have a feeling this is todo with SimpleClans also the console does not show any errors.

You should talk to Essentials people. Why do you have a "feeling" this is to do with SimpleClans? Regardless, I do not support Essentials' use in any way and will not lift a finger for any kind of compatibility.

Ok, Well I have just tried it with commandbin and removed essentials and it still does not work? lol But when I remove SimpleClans /Nick works again?

Weird, no idea. Maybe you can get one of the devs on your server to figure it out?

I am the server owner lol I just find it strange that they seem to stop
working with any /nick command. Thanks though

Yea people using my plugins are always owners, but not always developers. I am both so I don't need anyone else when something on my server breaks, yet I know 3 or so plugin developers on my server just from the plain fact that given enough people some have to be developers. I was asking if you knew any Java developers that are members in your server, maybe they can help out.