How come there are two versions of "The Cyphermage Incident?"

[Ravingdork]

Just picked up "Pathfinder Society Scenario #4-15 - The Cyphermage Dilemma" and noticed that, unlike all of my other PFS scenarios, this one has two PDFs.

Why is that? They appear to be identical at a glance, save for different covers. What's the deal? Are there any other differences between the two I should be aware of?

[Belafon]

It was originally released as a VC/5-star exclusive in Season 3. It was re-released in Season 4 as a scenario everyone could run. I don't think there is any difference between the two, but use the Season 4 version (yellow cover) to make sure people have the right chronicle.

The Midnight Mauler was the Season 2 exclusive that was released to everyone in Season 3. It DOES have a difference; the exclusive version was 1-7 and the everyone version is 3-7. Only the 3-7 is is legal now.

[Nefreet]

Day of the Demon was also like that.

[Tallow]

There were a couple clean up changes in 4-15, as one of John Compton's first development projects after he was hired. So definitely use the Yellow cover 4-15 version.