When I try to install the extension I get the following error: "This application is not supported on this computer. Installation has been disabled." I have a Th

When I try to install the extension I get the following error: "This application is not supported on this computer. Installation has been disabled." I have a Thinkpad T420s running windows 8 with Chrome Version 25.0.1364.152 m, any idea what's not compatible?