Weird crash in AIR application - actionscript-3

Question

I have a crash that only happens with the installed application I can't make it cvrash in the IDE(Flash Builder debug or run option)
After a long time of commenting and uncomenting code I found the problem and I am posting the code below
<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:ns="generic_components.*"
creationComplete="windowedapplication1_creationCompleteHandler(event)">
<fx:Script>
<![CDATA[
//import core.Logger;
import mx.controls.Alert;
import mx.events.FlexEvent;
import spark.events.TextOperationEvent;
protected function windowedapplication1_creationCompleteHandler(event:FlexEvent):void
{
//Logger.init();
}
public static function humanFromCamelCase(txt:String):String{
var res:String=txt.charAt(0);
//Logger.write("camel case for "+txt);
for (var i:int=1;i<txt.length;i++)
{
// Logger.write("camel iter "+i);
var c:String=txt.charAt(i);
//Logger.write("camel char is "+c);
if(c==c.toUpperCase())
{
res=res+" "+c;
}
else
res=res+c;
}
return res;
}
protected function test_clickHandler(event:Event):void
{
Alert.show(humanFromCamelCase("CompanyId"));
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:layout>
<s:VerticalLayout />
</s:layout>
<s:Button id="test" label="TEST" click="test_clickHandler(event)"/>
</s:WindowedApplication>
Also see a web sample here http://ploscariu.com/crash/TestWeb.html (may be not there in the future)
What is weird about this crash:
1 I have no idea what happens
2 The usual crash handler in the player does not show up
3 is not crashing in the development enviroment IDE
4 if i uncomment those Logger.write then the code works on my machine fine(it could not work on all machines), the Logger.write writes the sting in a file and is placed in another project swf (I did not included the logger code)
I a, assuming that the call to Logger.write can cause a delay or something similar
It is something wrong in my code or the player is buggy? or the compiler??
Any ideas?
Edit:
-is not the logger i use since the error happens when I am not using it like in the sample code or page, no logger the app it crashes
-i get no dialog from Flash with a crash report

Answer 1

This is so incredibly odd!!!! I have NO idea why this happening (yet)... but I have a workaround:
Instead of res=res+c, use res+=c:
public static function humanFromCamelCase(txt:String):String{
var res:String=txt.charAt(0);
for (var i:int=1;i<txt.length;i++)
{
var c:String=txt.charAt(i);
if(c === c.toUpperCase())
{
res += " " + c;
}
else
res += c;
}
return res;
}

Answer 2

I have no idea why you're having an error, however, I would replace the function with this instead:
public static function humanFromCamelCase(txt:String):String{
return txt.replace(/([A-Z])/g, ' $1').replace(/^ /, "");
}
Haven't tested it, but you get the idea. This is a much simpler and faster approach.
I also thought of another way:
public static function humanFromCamelCase(txt:String):String{
return txt.split(/(?=[A-Z])/).join(' ');
}