Feature and Archieve Images not showing

Hi, I discovered that ever since I upgraded my wordpress to 3.7.1 sometime 2 months ago, my feature image for posts doesn’t show anylonger.

I have this online magazine blog where I report stories with pictures. For each post, I copy other pictures from my other website where it is located and I now upload only the Feature image which is expected to appear on the homepage. Now the feature image don’t appear any longer and other images still appears.

The Archieve/categories page ais also affected.

What do I do?