Spreadsheet not working

[JMilnes]

I don't think Spreadsheet is working for me. On the showcase.

All I see is:

I see PrimeFaces Spreadsheet at the top.
then a input text.

Then I see a box. There is nothing inside the box - it's just a light blue box. (I wish I could attach it somehow...)
I just don't think that is what is it supposed to be?