After update XCode 8.2, every time save simulator screen shot always made it crash. Even I reset content and settings still crash.
Should I remove all simulator and inst
Yeah, unfortunately, this is tripping over a bug in Foundation on OS X 10.11. You won't have the problem if you upgrade to macOS Sierra.
If you cannot upgrade to Sierra right now, you can still take screenshots from the commandline:
xcrun simctl io booted screenshot
This is mentioned in the Xcode 8.2 Release Notes
Simulator can crash when saving a screenshot when running on OS X El Capitan. (29182710) The crash does not occur on macOS Sierra.