Please read the whole thread carefully before trying to apply the script supported.
Recently one of my colleagues found a way to exit Editor in a very quick way. I made myself a little script out of it.
var p = Application.getActiveDocument().getElementsByTagName("p").item(0);
var newnode = Application.getActiveDocument().createTextNode("50 ...Hz ±2");
where "p" in getElementsByTagName can be replaced with any tag where #PCDATA is allowed.
Please note that the script is meant to be a joke, worthy a try though.
For further information see CS103713 at ptc.com´s technicalSupport. This crash seems to be solved in further releases.