Identify widget doesn't work

Hi!

I have a major problem with the identify widget. I installed Identify widget for App builder (as it is written here: http://resources.arcgis.com/en/help/...0000004m000000 ), but still it doesn't work. I can see identify widget in widget list and i can also edit it. But when I preview my application and click on my map (raster layers) it doesn't respond. I have identify widget open and i can choos point, line etc., but it just doesn't work.

Do you have any advice?
Thanks
Rok