Hi, Just upgraded to Yosemite / Mail 8.0. If I right click on my Exchange email account, and choose Out of Office, as I have done a million times before, I can edit the message as normal. However as soon as I try to enter date information in the "while scheduled" fields the whole popup locks. It sometimes lets me alter the first part of the first date, but that's it. I have managed to get it to work by using the option "Until disable" instead of "while scheduled", but that's not really the point. Can anyone help please?