I am supposed to complete "A Strange Visitor" with the task of "Introduce yourself to Emit Relevart. I did introduce myself. And we are now "good friends". Unforuntuately I still have the task to ...
Ideas
Make sure you're making the introduction with the sim who did the first quest task. I found that other members of the family could introduce themselves and it didn't work, but as soon as that sim did it completed the step.