From what I'm understanding you're saying is the only thing you changed in your probram was the config line. So, to me, there has to be something wrong with that. I'm not familiar with machine language but the formatting of that line doesn't match the manual. There is supposed to be a space between config and ampersand(&) character. You also say the line is indented but, may sound stupid, did you use tab and is tab giving enough columns for the asm to work?

There also not the same config items from PBP2.6 to the PBP3.0 code snippet. Are those config names correct?

If you do figure this out, please let us all know.