When I first open Adobe Acrobat 2017, the PDF reader closes itself within 15-30 seconds. Sometimes it happens a second time after opening the same file. Usually it will stay open the third time on that document. When I open a separate file, the crashing happens all over again. I checked for updates and the software says it is up-to-date (17.011.30194). It is so frustrating as I am trying to work on various documents and it crashes like this. I expect more. Please resolve this ASAP!