Please do this in Outlook:
* Go to File -> Options.

In the window which opens do this:

* Select Add-Ins.
* Choose Disabled Items from the drop-down menu at the bottom of the window, and click Go.
* If SPAMfighter appears on the list, select SPAMfighter and click Enable.
* Close the window.

* Now select COM Add-ins from the drop down menu and click Go.
* Enable the checkbox next to Fighters Outlook Plugin
* Enable the checkbox next to SPAMfighter Addin
* Click the OK button

SPAMfighter should now be back and working.