I've done this before and so I'm perplexed as to why my custom island is not showing. I created a custom island and pasted some banner code and I expected it to show between the 1st and 2nd post of a particular forum.
I selected it under "Custom Insert" under Forum Settings. Am I missing something?
Never mind, I figured it out. I didn't select the particular forum, my bad. I recently moved from an older version that didn't require this extra step. Now I know.