Adam,
I still end up with the same issue. But! I found something else.
I should have tested pasting text into the title box (with the groupbox text can be entered into the title space and then the main area, just to reiterate for myself). Why? Well when I paste text into the main area I get the same error, but when I paste text into the title box it does paste it, but when it does it appends "vtemp_span" at the end of it.
Now, if I paste text into the main area after pasting something into the title area, it does paste the text but the formatting is off. Let me know if that doesn't make sense. Thanks.