I use screenshots extensively and really like the simplified interface from the Toolbox. I have found a problem with the screenshots from Parallels Toolbox that causes Mac Outlook 2016 to refuse sending an email with the screenshots pasted into and requires a restart of Outlook. If I prepare a message with some text and a screenshot from Toolbox, I get error -17900 "An unknown error has occurred in Outlook" and the message is stuck in the outbox. Work fine when I use grab to add screenshots. I have configured Toolbox to automatically place the screenshot on the clipboard. Is this a known problem?