Web Works SDK installation problem – Incorrect SDK detected

Hello all,
Here comes my question:
I was installing SDK on my XP box. After installing the ADOBE AIR SDK I was trying to point to it while installing the web works package. I got a message about an Incorrect SDK:
"Incorrect SDK Detected
Incorrect AIR® SDK selected. Please browse to https://www.adobe.com/devnet/air/air-sdk-download.html to get the Adobe® AIR® SDK 2.5."

I got the SDK from Adobe web page. I don't understand, what kind of AIR SDK do i need to select?
All the best
Vesna
