Posting for a colleague. She's been printing without issue at work forever, but just this week, when she goes to print function in any application she's in, it crashed everything, and if she goes into system prefs > print & fax to see if the printer is still listed, that also crashes everything. When I say everything, all functions stop responding and she has to restart. Any ideas? She's in Sierra, but has been all along, so it isn't like it's an update thing. She's already done the disc first aid thing in utilities.... Thanks.