I certainly am! I spent the better part of an hour writing a detailed reply to a couple of messages from one of my favourite friends, felt very satisfiedwhen I finished and cheerfully pushed the "Send" button only to have it completely disappear to who knows where - I was not happy!!
I've resorted to typing my reply in another application - notepad, word, similar programs and then copying and pasting the reply into the message box on TN. We shouldn't have to do this in 2017, but........at least you don't have to re-type the message.
Just an update on this, I'm not sure if it's just me but everything seems much more stable now. No problems with messages or with pictures uploaded to my group.
Messaging is now a dream compared to previously and no crashes or errors at all.
Thanks for sorting this, much appreciated by everyone I'm sure!