Google Spreadsheet script: debug icon disabled

Question

This is my first attempt at creating a google spreadsheet script. I am following this tutorial: https://developers.google.com/apps-script/articles/docslist_tutorial#section2

I can't get the csv to load and I'm attempting to debug.

I found a blog entry that says this:

...you can set a breakpoint on any line of code, just by clicking on the line number. Then, simply run the script using the 'bug' toolbar icon instead of the usual 'play' button, and the script will run only as far as the first breakpoint.

However, the debug icon button in the toolbar is grayed out.

Any suggestions as to how I might enable this? A google search has turned up nothing. I am using Google Chrome Version 26.0.1410.43.

Answer 1

select a function in the dropdown list