Hi

i have already WLM 8.5 ,and run ok
i installed WLM 9 beta
but did not work
i went back to WLM 8.5 but didin't install

and this pic

you have to uninstall first the beta version. go to uninstall program and remove Windows live suite

there is no Windows live suite in uninstall program and remove

try searching your registry & removing all traces of windows live messenger there

try using revo uninstaller...