YORUK I have the same disappointing experience. I updated to DiskWarrior 4.2 as instructed. Unfortunately, the disk does not work; you get a blank screen when you start by holding the C key. I have a brand new MacBook Pro running Snow Leopard (OS 10.6.1). I wrote the DiskWarrior cusotmer service. They say I need an updated boot file because I have a new Mac. The updated boot file can only be obtained on media (no download), which will cost $12.95 plus $8.95 S&H. What an inconvenience and ripoff. I will just use my old DiskWarrior.
(Version 4.2)