Why do i have a pop up window EVERY time i try to send an SMS

[AC Question]

Every time i send an SMS i have about a 20 sec delay every time i press send.
I have a pop up box the says
Enhanced reature has stopped. Close app.
I took the phone to my provider who recommended cleaning out all old SMS messages.
I have done this....no luck.
Have tried turning off the on.
Aslo cleaned out Caches from settings?.
Any suggestions?

 

[B. Diddy]

Welcome to Android Central! Which phone, and which messaging app?