Please help! This issue just started happening to me yesterday, and it is only happening with ONE contact/phone number in my phone - not all.
I noticed it first when trying to send a text message. My phone would not send a text to Jenn - failed each and every time. However it would only fail if I was responding in our text message thread. Opening a new text message and choosing her name (a la quick compose via ChompSMS) worked.
What I have discovered by viewing the failed message details is that the phone is texting to Jenn<3215555555. I have deleted her contact in my phone book but even when I try to text her real phone number, the thread turns into " Jenn <3215555555 "
WHAT THE HELL?!?!? I've restarted my phone, done a battery pull, and uninstalled/reinstalled ChompSMS - however, I know it isn't Chomp because I am seeing the same problem in the Moto Droid's native messaging app. I have even deleted her contact info but somehow it is stuck in my phone's memory.
Please help!! Thank you!