Try uninstalling msg plus. I had the same problem with messenger at first. Tell me the mod name that is causing the problem.
Only difference now is I cannot install msg plus live because some mod called gdiplus.dll isn't functioning correctly or something.
I had msg plus live for like a year, and then suddenly I started getting live messenger encountering error before it even starts. When I uninstalled plus...Live Messenger worked again.
Thats what happens to me when trying to run messenger plus! live.. everytime. It also occurs with version 4.22.. 4.23..and lower. What is going on???