I've had the same problem eith both versions of the plugin. I install it, everything is fine, it even works for a bit, and suddenly stops. The executable still loads, but I get no notifications. Reinstalling MSN Messenger, Plus and the plugin does no good. I know the problem is probably a conflict with something else on my PC, but I can't find a pattern. Any ideas??
Windows Version: Windows XP, 5.01.2600
Messenger Client Version: 6.2.0133
Messenger Plus! Version: 3.01.0094
PS: the plugin (when I can get it to work) is amazing. By far my favorite of all