Did you update your network settings with
yournumber@vzw3g.com as user id and password is vzw? That's the only other thing I updated. I updated both Verizon Wireless and CDMA1x. Try a reset afterward. The only other things I can think of, I updated it with *228 then 1. I assume you have unlimited data...
I only receive the error where it attempts to send 3x and fails IF I attempt to send a MMS through TF3D. You are trying to send the MMS through Windows' default messaging app correct? Its the MMS app that you can get to by going to your email inbox>menu>Goto>SMS/MMS>New>MMS>Custom (do you have an email address setup, I do, I think you have to already have an email setup to access the mms portion)