[meatgel]

Maybe it's a problem with you actual Sprint account? If you flash back to stock, so the pictures come through? Seems like it would work fine on the pre-made ROM. I know 2.5 has some MMS issues, but if you are getting the same error on all of the builds, maybe you have an account issue on Sprint's side. This is just a first guess. I don't use manila, so my next guess is manila is mucking it up --- but that is 'cause manila is a pain to me -- not based in any true science.