Can you tell me how you did it exactly.
IN my case I downloaded the extension and imported it.
Now I can see that open street map widget in the mashup.
When I used it on my mashup by simple drag and drop and ran that mashup then I am not able to see anything.
What might be the case???
Please help me.
I did the same as you: imported the extension and drag and dropped the widget to the mashup. But like I said, it works very slowly.
In the browser developer tools (Ctrl + Shift + I in Chrome) I'm seeing some cancelled requests initiated by CombinedExtension.js. Something deprecated in the extension code?