I installed "iMacros for Chrome" as an extension for my Google Chrome web browser on Windows 7. I used the extension happily for a few months. Then, strangely, one day, I was unable to click the toolbutton. Literally, it shows to the right of my omnibar, but left clicking does nothing. I can right click to activate a context menu (that works OK), so I know the extension is installed.
Also, in the Chrome Extensions management console, the extension is enabled and I have checked "Allow access to file URLs".
Could this extension be blocked by a Windows security policy?