OS X first aid - cure application crashes
Ted Landau writes: "Just as unwelcome as the application freeze is the application crash. In this case, youâre not trying to force a program to quit; youâre trying to prevent it from quitting on its own. When an application crashes, you typically see a dialog box informing you that it has âunexpectedly quitâ. As with application freezes, the good news is that these crashes rarely bring down an entire Macâthey usually affect just one application. But youâll still want to end this ailment. Try these methods, one by one, until the problem disappears."