For a few weeks I have been having continuous problems with my Office 365 apps on my Macbook running OS X ElCapitan 10.11.5. I use this for a living and all of my clients use Microsoft documents and spreadsheets. I can work for about 10 mins on Word or Excel before I have a crash. It is causing continuous disruptions. I've had to use 365 online to get around it, but it's slow and I have to keep replicating files if I don't want to use OneDrive.