What I did was I found UncivilSage's ZIP file with all flashing tools for the EVO. I then copied files 0 and 1943 after doing open sesame door. I wrote the new MEID/ESN in those files. Now, it won't let you drag and drop back in (not for me at least) but what I did was right click > transfer item from PC > and chose them. That's how it worked for me. Right now, I'm in the process of trying to get my AAA Key from LGNPST, but it won't open for me -_-; says something about C:\Windows\system32\wnsdrvr.sys not found. Trying DFS next, while listening to some good ol' GWAR.
Edit: I loved my triumph. Only reason I decided to do this was A) I broke my triumph (dropped it 20 feet onto concrete :/) and B) I saw an EVO on Craigslist for 20 bucks XD
Oh, and I would make sure you are rooted first. Else you can't read/write from the root of the phone if I'm not mistaken. One more thing; Make sure you run QPST/QXDM in windows XP service pack 3 compatibility. That's what worked for me
Hey I had that same issue, the way to fix it is to copy and paste the LGNPST exe file in the zip folder into the LGNPST program files, and then run it.