I have a BB8330 with os 5.0 installed. In the past few days I have a problem develop where I cannot send a text message to one out of all my contacts. I have tried renaming, changing the phone number format (xxx)xxx-xxxx and xxxxxxxxxx and even deleting the contact.
I saw the thread that refers to not being able to see a contacts reply because of the history but this is not the case. I can't even select him to send a message.
The only workaround that works is to select the contact twice but then they get 2 messages!