Blank Canvas gmail signature firefox plugin is driving me nuts....

Ok, one day blank canvas worked, today it stopped.  But before it stopped working, I wanted to see if it would work for Google apps so that I can write a blog on it for our company.  It did not, so I started looking for preferences or options and notice that there was a button for the aforementioned but it is greyed out(read: inaccessible).  Thie is a screenshot(windows and linux) of what I am talking about and I have yet to research it on their sight, but it is driving me bonkers.  I will update this when I find a solution.