The FORUM is purchased software.  It has a BUG that when any of us starts a new thread, it doesn't appear to "complete."  One way to avoid this is do everything normally but after hitting "Post" and seeing nothing happen, simply click either the:
 
1. "Forum" link on the top of the page
2.  The "Forum Home" link above the forum
3.  The  blue "GCU Forum" link just above the thread Subject/Title
 
This will cause the thread to start even though you won't see a "New post" indicator on the base Forum page, however if you go into the topic area, such as Artist Chatter, you'll see the new thread is there.
 
TOM