UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support Error when editing users

When i enter the admid area and choose "Show/Edit Users", the code below shows up at the top of the setting page.

What is this and what should I do about it?

<pre> Warning: Bad arguments to implode() in /home/httpd/site/html/forum/admin/selectusers.php on line 39
</pre>

This is a know bug. It's harmless.

Here is a post with the fix.
This thread at Threadsdev.com