i think i got the same problem as you:i'd install Messenger Plus! live and it work ,but after restarting my computer when i open msn live ,Messenger Plus! live doesn't open........what can i do??
The only solution can clear the current situation is formatting PC.
If you've installed another messenger add-on such as avatar manager, some kind of hooking application, or something like that, it may cause conflition not to expand custom menu by msn messenger live.
If we could have menu arrangement solution for msn messenger live, we could clear the problem.
-.-
I also want to get the solution can clear this problem.