rdar://13128709: type “File:///”. The capital ‘F’ is important. On the third /, it crashes. And the crash reporter, Mail, and even the Spotlight menu can crash when displaying the text. In some apps you can prevent the crash by unchecking Edit ‣ Substitutions ‣ Data Detectors. For Mail, there’s a defaults command. Update (2013-03-16): The … Continue reading Data Detectors Crash in Cocoa Text Views