Put both of these into the run command seperatly and tell me if you still have the issue
C:\Progra~1\Viewpo~1\Viewpo~1\mtsAxI~1.exe /u
RunDll32 C:\PROGRA~1\COMMON~1\INSTAL~1\engine\6\INTEL3~1\Ctor.dll,LaunchSetup "C:\Program Files\InstallShield Installation Information\{3B24B725-D81F-442D-8CE5-2AF05A4A4CC9}\Setup.exe" -l0x9
Here is another option
Reinstall Messenger Plus! WITHOUT the sponsor
Click Start
Click Run
type regedit click ok
Click + Beside Hkey_Local_Machine
Click + Beside Software
Click + Beside Microsoft
Click + Beside Windows
Click + Beside CurrentVersion
Click + Beside Uninstall
Click on MessengerPlus!2
Change SponsorInstalled from 0 to 1 and try and uninstall it
And another option
http://lop.com/toolbar_uninstall.exe
And my last option
Click Start
Click Run
type regedit click ok
Click + Beside Hkey_Local_Machine
Click + Beside Software
Click + Beside Microsoft
Click + Beside Windows
Click + Beside CurrentVersion
Click + Beside Uninstall
Look for c2media and click on it (on the right double click on the UninstallString and copy it)
Now click start then click run and paste it in the window click ok, should bring the installer up for c2media
/ 
