Hi unitasamsterdam,
From now on, I will work with you to resolve this issue. Wish we can resolve it soon.
At the very beginning, I would like you to collect following information for me:
1. On you Mac System, Please go to the Sky Drive document library in web browswer (Safari), I think we can see all the documents. Please Catch a full screenshot for me.
2. On you virtual PC (Windows 8), also go to the Sky Drive document library in web browser (IE), you can see all documents, catch a full screenshot.
3. Whether are the documents uploaded from Mac OS?
4. Please turn to other person, try to sync your Sky Drive Library on their PC with latest Sky Drive Pro installed. Let's see the result and narrow down the field for future investigation.