Can't flash roms (Updated with fix!)

[Jocelyn84]

I just picked up an Evo a few days ago and this is so frustrating compared to my Diamond days. It took me a lot of searching and a lot of attempts to finally get rooted via unrevoked 3.3, but I finally got it. S-off, Superuser, and I get # so I'm definitely rooted. I've tried Rom manager, doing it manually via Clockwork 3.0.0.2, the older Clock work (2.5 something), and even RA recovery, but nothing seems to work. Oh and I've reformatted my SD card and cleared data, cache, etc., every time.
When I flash cyanogenmod or Calkulins rom, I get rebooting loops with the HTC logo white screen. With just about every other rom the flash aborts somewhere into it and I have to restore back to stock. Anyway, I'm just looking for some insight about what I might be doing wrong. I feel like such an idiot lol.

Edit: My guess is yes, but is it normal for me to get blue and pink stuff on the screen whenever I flash or restore?

Edit2: Use Amon's recovery in the following post to get it working.
xda-developers - View Single Post - [Recovery] [28-August-2010] RA-evo-v1.8.0