title: Why won't Weka allow me to start Association Rule generation?
body: <p>I have created an arff file for a data set that I would like to use in Weka. The file is formatted as a sparse arff file. Anyway, I have successfully loaded in the data. I then switch to the Association tab and set my parameters. However, the Start button won't become enabled, so I can't click it to start the association generation. Why is this? Has anyone run into this issue before and know how to solve it?</p>
  
  <p>Here is a screenshot:</p>
  
  <p><img src="https://i.stack.imgur.com/By49u.png" alt="enter image description here"></p>