Is that your whole script? If yes, then you have forgotten to declare the MFQuestQuest property
Just put the following in your script somewhere after the script (I personally prefer declaring them before the events, but I've also seen them at the end):
Quest Property MFQuestQuest Auto
Then after the code compiles after you save it, close the papyrus window and click on the properties button and then link your property to the actual quest
At the same time tho, this line is bugging me:
"c:\program files (x86)\steam\steamapps\common\skyrim\Data\Scripts\Source\MFQuestQuest.psc(3,15): cannot name a variable or property the same as a known type or script"
If i read it right, that could mean that you in fact have defined a property in line 3 of your script, and that you are trying to name it with the same name that is already being used by a script somewhere? What could fix that is to just define and use in your script a quest property of a different name, "MyQuest" for example. Then just link it to your quest through the properties button as previously mentioned
Hope that helps
- Hypno
EDIT: Ninja'd lol