Seems to be a weird problem. I guess the one with Custom is in alpha testing.


v10a6 is the version I have. You've probably on v9.


Try going to the Tools menu > Add-ons

And go to the Extensions tab and push the "Find Updates" button at the bottom.


I believe that worked for someone else, and must have been how I got it as well. Unless it's out there on a google search too.