Read my solution for this issue in this post.
http://forum.xda-developers.com/show...=1#post2539771
I keep hereing you have EVDO (Verizon) but your on sprint? isint that EDGE?
but anyway. it sounds like like you may need sprint to reset your data package,
or try installing the Carrier CAB again, sometimes it doesint take on the 1st install. if you run it again and it doesint ask you to replace the files. then that means it didnt install right the 1st place.