wrap prefs with try and catch. turn back on ComposeLoad() call.

mailnews/compose/resources/content/MsgComposeCommands.js

@@ -29,8 +29,18 @@ var prefs = Components.classes["component://netscape/preferences"].getService();
 if (prefs) {
 	prefs = prefs.QueryInterface(Components.interfaces.nsIPref);
 	if (prefs) {
-		update_compose_title_as_you_type = prefs.GetBoolPref("mail.update_compose_title_as_you_type");
+		try {
-		other_header = prefs.CopyCharPref("mail.compose.other.header");
+			update_compose_title_as_you_type = prefs.GetBoolPref("mail.update_compose_title_as_you_type");
+		}
+		catch (ex) {
+			dump("failed to get the mail.update_compose_title_as_you_type pref\n");
+		}
+		try {
+			other_header = prefs.CopyCharPref("mail.compose.other.header");
+		}
+		catch (ex) {
+			 dump("failed to get the mail.compose.other.header pref\n");
+		}
 	}
 }
 

mailnews/compose/resources/content/messengercompose.xul

@@ -30,12 +30,10 @@ Rights Reserved.
 
 <!DOCTYPE window SYSTEM "chrome://messengercompose/locale/messengercompose.dtd">
 
-<!-- removed, function must exist to use here
-		onload="ComposeLoad()"
--->
 <window xmlns:html="http://www.w3.org/TR/REC-html40"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
 		onunload="ComposeUnload()"
+		onload="ComposeLoad()"
 		width="640" height="480"
 		title="&msgComposeWindow.title;"
 		align="vertical">