Contour Map Creator

Despite success using this tool in the past, today it stopped working for me. When I click Get Data nothing happens. No contour lines are drawn. I recently had my operating system reinstalled (MS Windows 8.1 - using Firefox)

this is awesome!!! but it would be even better if i could change to Feet to get more precision.

In the newest version (change log 9.9.2013), on clicking "get data", i am getting undefined in the latitude box. please check it.