I , too am unable to access my folders on Skydrive using the Android App.  I get the message:
This folder can't be displayed.
This folder can't be displayed.  Make sure you're connected to a Wi-Fi or cellular network and then tap the refresh button.

My Wi-Fi connection is active.  I am currently using the Gingerbread version of Android.

I have already tried uninstalling and reinstalling Skydrive without success.  I can access the skydrive from my browser but I get an untrustworthy certificate message.

Can you help me?