Sometimes, when copying and pasting, hidden characters (sneaky lads) can be within what you've written!
To resolves this:
1. Open Notepad.
2. Copy and paste your text into Notepad.
3. Copy and Paste the message out of Notepad and into the box where you write your text message!
- Notepad removes hidden characters!
Or Alternately, you can type out your text yourself!