Cannot install any Custom rom 3.5 Help please

[jmolhava]

HI,
I have been trying to install a few of the custom rom's I found on this site. (thanks by the way to all who take the time to make these!)
I am currently running version 2.06 w 1.27 radio. I was able to flash that with no problem.
I have downloaded and attempted to install:
Kirvin 3.5 NoJunk
Colonel's 3.5 final
and the 3.5pr6
None of them will install.
It checks the device info and in the summary it has no specifics. Then after I click "Upgrade" it gives me an error:
"ERROR 150: ROM upgrade utility error"
"This ROM Upgrade Utility does not design for your device. Please get proper Upgrade Utility and try again!"

My unit is a Sprint PPC-6700
Thanks in advance for any advice.