If you use Chrome, you’ve probably come across this problem before from time to time. You click the button for an extension and nothing happens. Click again, still nothing. It worked last time you opened the browser but now nothing. And some extensions are more prone to this problem than others. For me it’s Diigo.
So how to get the button working again. Well I guess you could try restarting the browser but that takes time. I’ve found that disabling and re-enabling the extension is quite quick and usually works for me. To do this, just right click on the offending button and chose Disable (not Uninstall). Then open the Spanner menu and navigate to Tools, Extensions, go to the extension you’ve just disabled and click Enable. That should do the trick. If not, try restarting the browser.