Numbers won't open
I was working on a business speadsheet and Numbers suddenly crashed. I clicked the 'reopen' button but it now refuses to open at all.
I've restarted the Mac and am currently operating in 'safe' mode, but it still won't open.
Any ideas? Is there a way to delete the app and download a new copy?
Andy
iMac, OS X Yosemite (10.10.4)