Netty

Would someone please tell me why I cannot get past the first page in any of the Display Modes.

The problem is this: I would open a thread that has several pages, and when I click the next (">") icon to go to page 2, the screen reverts to the initial post in Thread Mode, and this happens from Hybrid or Line Modes. I've already tried entering the page number and hitting "go", and again, the screen reverts to the initial post in Thread Mode.