After I installed windows live essentials 2011 on Windows Vista I got this error. I tried the instructions in the link provided by the error message (http://windowslivehelp.com/solution.aspx?solutionid=f427b98c-8fc9-4e0c-9931-859ddf8caa69) but didn’t help. So I just run the installation again & run repair as follows: 1. Start –> Control Panel –> Programs. 2. Then locate "Windows Live Essentials