Debugger crash SDK 3.5

Running SDK 3.5 with debugger on IOS 6+ simulator

I have a very simple app

app.js

var win1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});
 
win1.open();
 
var xxx=1;

If no breakpoints, runs fine, blank window opens. Put a breakpoint in at var xxx=1 and debugger terminates with Segmentation fault 11, and diagnostic report shows:

Time Awake Since Boot: 100000 seconds Time Since Wake: 12000 seconds

Crashed Thread: 8 KrollContext<kroll$1>

Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000054

Run with SDK 3.4.1 and no problems, with or without breakpoint.

Anybody else experiencing this? I have tried reloading Xcode, reloading titanium and no luck.