Internet Explorer Developer Toolbar Options Are All Greyed Out

Here’s one that I’ve run into several times, and it always takes me too long to remember how to fix it.  So, you’ve installed the handy dandy Internet Explorer Developer Toolbar (one of the Swiss Army knives for Web developers) on a new machine and when you open it, all of the drop down options are greyed out: you can’t actually *do* anything!

Here’s the simple solution: in IE6 or IE7, choose Tools/Internet Options…/Advanced tab/under Browsing, make sure that "Enable third party browser extensions (requires restart)" is checked.  Restart your browser, and you’re back in business!