What I'm trying to do is enable a select set of items (static as well as activators and actors) when the player complete a quest. In the above script it is written for the "Unbound" quest, the one you finish as you leave Helgen (the tutorial MQ101) In my cell i have a XMarker with the Reference Editor ID "TestMarker01" its set as Initially Disabled, and linked as Active Parent to the items i want to enable.
I might be missing a simple thing, and have had help writing it, but for some reason I can't even get it to compile.

What ObjectReference is this script attached to? The XMarker in question?

You have some syntax issues. This should compile.

Scriptname CHProgressScript extends ObjectReferenceStatic property TestMarker01 autoQuest property MQ101 autoEvent OnLoad()    If MQ101.IsStageDone(900)	    TestMarker01.Enable()    endifEndEvent

GetStageDone is not a function, but http://www.creationkit.com/IsStageDone_-_Quest is. IsStageDone is called on Quest objects, with the stage number as a parameter. So, since PlayerRef was no longer needed I removed it. You also had no endif statement.

Give that a try and see if it does what you want. Make sure to resolve your properties in the Creation Kit or it won't work.

the script is planed to be attached to the xmarker (well several xmarkers, since its a progression mod im build, verious displays and things as quests are completed)

Will give it a try, thank you

-Edit-
compile log on the above script

Don't use 'Static'. The enable function requires an ObjectReference.

ObjectReference property TestMarker01 auto

Duh. Not sure how I missed that. Right. You'll need to set the marker as type ObjectReference and give it a ReferenceID in the CK (by double-clicking on it in the render window and assigning it there; this name is separate from the EditorID).

wouldent it be a bit simpler for me to have 1 xmarker with all the quest stages i aim to use and have that enable or disable the parent-xmarkers for the verious items within my cell?

It depends entirely on your application. Play with it and do what you think turns out the best.