You recieve the error - "email message required" when trying to send a newsletter or send a email to your store members / customers / affiliates ? There is a problem in the 126.96.36.199 Opencart version which can easily be solved.
1. Open file "contact.tpl" in the "admin\view\template\sale" folder of your opencart store
2. Go to line 244, you'll see the line: