Why does the app freeze after emailing a Touch file?

I am trying to email a file built in Touch and now every time I do the email window stays on, and I can't return back to the application.  The only way I can return to the Application is to close it, wait a few minutes, then re-open it.  Only after doing all this can I return to what I am doing in Touch.  This problem repeats after every time I email a Touch file. Very awkward and this just started happening.  It never did before so I wonder if this problem is from a recent update - Apple or Adobe - that has gone wrong.