Please help
(/Users/bm/Library/Application Support/Corona Simulator/David _Goliath-2232BE65DD27AA8084367566BF37E6EC)
2013-04-08 11:06:41.666 Corona Simulator[617:f03] -----------------------------------------------
2013-04-08 11:06:41.680 Corona Simulator[617:f03] WARNING: Simulator does not support multitouch events
2013-04-08 11:06:41.683 Corona Simulator[617:f03] WARNING: Simulator does not support multitouch events
2013-04-08 11:07:16.765 Corona Simulator[617:f03] *** -[NSPlaceholderString initWithUTF8String:]: NULL cString
2013-04-08 11:07:16.786 Corona Simulator[617:f03] (
0 CoreFoundation 0x00007fff86e8ef56 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8e22cd5e objc_exception_throw + 43
2 CoreFoundation 0x00007fff86e8ed8a +[NSException raise:format:arguments:] + 106
3 CoreFoundation 0x00007fff86e8ed14 +[NSException raise:format:] + 116
4 Foundation 0x00007fff8f8a090d -[NSString initWithUTF8String:] + 76
5 Corona Simulator 0x000000010002ec72 start + 184930
6 Corona Simulator 0x000000010002e997 start + 184199
7 Corona Simulator 0x0000000100029fae start + 165278
8 Corona Simulator 0x000000010002aa26 start + 167958
9 Corona Simulator 0x0000000100013861 start + 73297
10 Corona Simulator 0x000000010000c5c2 start + 43954
11 CoreFoundation 0x00007fff86e7e70d -[NSObject performSelector:withObject:] + 61
12 AppKit 0x00007fff8614b8ca -[NSApplication sendAction:to:from:] + 139
13 AppKit 0x00007fff8614b7fe -[NSControl sendAction:to:] + 88
14 AppKit 0x00007fff8614b729 -[NSCell _sendActionFrom:] + 137
15 AppKit 0x00007fff8614abec -[NSCell trackMouse:inRect:ofView:untilMouseUp:] + 2014
16 AppKit 0x00007fff861cab74 -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] + 489
17 AppKit 0x00007fff861497f6 -[NSControl mouseDown:] + 786
18 AppKit 0x00007fff86114c98 -[NSWindow sendEvent:] + 6306
19 AppKit 0x00007fff860ae3a5 -[NSApplication sendEvent:] + 5593
20 AppKit 0x00007fff86044a0e -[NSApplication run] + 555
21 AppKit 0x00007fff862c0eac NSApplicationMain + 867
22 Corona Simulator 0x0000000100001a44 start + 52
23 ??? 0x0000000000000001 0x0 + 1