IEF (Alpharev) made this utility as a Linux LiveCD specifically to avoid Windows/Virtual Machine issues, so stop using them!
Thanks to IEF of AlphaRev the T-Mobile myTouch 3G Slide has S-OFF! I have been working closely with IEF and Unrevoked to make this happen - all credit goes to them for the actual 'brains'.
Here's a photo of proof:
(click on image for full-size)
DOWNLOAD: http://alpharev.nl AVOID USING A VIRTUAL MACHINE WITH THIS UTILITY.
DONATIONS: Click here to send a donation to AlphaRev.
REQUIRED FIRST: http://forum.xda-developers.com/showthread.php?t=754020
Need a free program to burn an ISO? Checkout CDBurnerXP, then ask yourself why you need S-OFF if you've never burnt an ISO before.
Problems? Try NOT using a Virtual Machine!
Still having problems? Try removing your microSD card from your phone before (and during) the Alpharev process.
Still still having problems? Flash the stock ESPRIMG.zip from here: http://db.androidspin.com/androidspi...ase=280&type=1 (from HBOOT, not from Clockwork). WARNING: this will wipe your entire phone, including ROM, root, application data, and return you to stock. Once it's finished flashing ESPRIMG.zip, start the entire process over (including rooting), and then try again.