Windows Live wont open after reinstallation wlstartup.exe -Entry Point Not Found

I have Windows 7.

Windows Live wont open after reinstallation

Yesterday my default email account wouldn't sync., though the other 3 accounts did.

 a forum suggested uninstall/reinstall Live Mail to fix that error message, I installed Essentials, all components of it,

now windows live mail wont o[pen at all, the error message is:

 wlstartup.exe -Entry Point Not Found

The procedure entry point

?OnGetMinMaxInfo@CDUIDialog@@MAE_NIJAAJ@Z could not be

located in the dynamic link library UXCore.dll

What next?

Thanks!,

Terry