704 Samplecode Widget demo error

The Widgetdemo in Samplecode from the 804 build brings up an error and freezes in the sim,

ERROR: bad argument #1 to display.newImageRect(): filename expected, but got nil.
Runtime error
?:0: attempt to index field ‘up’ (a nil value)
stack traceback:
[C]: ?
?: in function ‘?’
?: in function ‘?’
?: in function ‘new’
?: in function <?:2530>
(tail call): ?
…s/CoronaSDK/SampleCode/Interface/WidgetDemo/main.lua:398: in main chunk
Runtime error: ?:0: attempt to index field ‘up’ (a nil value)

Am I missing something or is this a bug?
[import]uid: 142733 topic_id: 26551 reply_id: 326551[/import]