This will work for sure as long as the adware is coming from the Plus! sponsor
- Download the latest Messenger Plus! from
http://www.msgplus.net and install it. Even if you already had the latest version, this is important in case the sponsor uninstaller was damaged by any anti spyware tools.
- Install Messenger Plus!
with the sponsor.
- Reboot your PC.
- Un-install the sponsor, use instruction
here
- Reboot PC again.
- You could now install Plus! without sponsor if you wish.