I found this on GSM Forum, thanks to that soul!
Go to start -> run, and paste this to remove the addin!
regsvr32 /u "C:\Program Files\IVT Corporation\BlueSoleil\outlookAddin.dll
Worked for me!
Sing sing hier, speel speel daar...
regsvr32 /u "C:\Program Files\IVT Corporation\BlueSoleil\outlookAddin.dll