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Do you remember anything more about the show itself and regular-occurring characters? The general premise of the show, the main characters' designs/appearances, etc.? People might not remember this specific episode of the show off the top of their heads, but they might recognize a description of the regular characters.
Not really, sadly. I do think it was on the Disney Channel, though, and it was a live-action series.. I'm just not sure about any other more specific details.
Current Project: Incorruptible Pure Pureness
This was years ago, back when she was just known for being the author of Harry Potter and not for... everything else. It was a kid's show where there was an author who wrote books that were an HP parody, and in a dream she'd gotten the idea to end the final book at a crossroads cliffhanger. The characters thought this was bad and convinced her to change it to the expected "beats the bad guy" ending, only for everyone else to find that ending lame and predictable, and to prefer the crossroads ending.