I've added a new download for the episode, that works with the latest version.

***As a note, the level "Boo Mansion" cannot be cleared currently, due to the latest SMBX2 update (beta4) breaking the Snake Block NPC. I hear it will be fixed on the next SMBX2 patch though, and that level can fortunately be skipped anyway.

You need to download the game here to play this episode.
http://codehaus.wohlsoft.ru/downloads.html

NEW THINGS:
Made sure all the levels work on the latest version.
Changed levels around on the first world, to push the harder level back.
Balanced some levels to be easier, and hopefully more fun.