Can't send texts to SMS Short Codes on AOSP Jelly Bean ROM

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http://forum.xda-developers.com – I'm using the crespoa i9020a package for my phone from the Google site, and for some reason I cannot send any texts to short codes, however I can receive them. Breakdown of what happens when I try to text a shortcode: I text "51401" to 33333 (local transit authority bus information number, 51401 is a stop number) SMS Application says "sending" briefly, then says "Could not send message", asks me to review and attempt to send again. Trying again does not work. I'm at a loss as to what to do. I've even tried alternate SMS programs to make sure it's not just the (HowTos)