show moderators errors.
 

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I now have myself as a moderator per forums. When I am not assigned. Also a " , " is before a user has been mentioned. How do I fix this?

That must be a modification you are using because it isn't standard vbulletin code. You should ask for help in the modification thread. I'm guessing it is something in your template, so take a look at the templates for that part of your page.

Is there any other possible errors?

With the amount of information you have posted regarding it, I really don't know.

I don't understand how the modification could change how the Moderators are displayed though? The code is pretty much correct, I thought perhaps there was an option in which I didn't show.

You've got an extra comma showing up in there. It's coming from somewhere - either your code or your template. There is no option that says "please add an extra comma into the moderator list".

I've actually managed to remove the comma. But I don't know why my name is showing up in all the forums as a moderator? It's weird. Any suggestions?

Check admin cp > forums & moderators > show all moderators. Do you show up as a moderator in all those forums on the Moderators list there?

Check, I'm not.

Try disabling your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit config.php and add this line right under <?php

If that doesn't fix it, then we really need to see the code you are using to output the moderator names.