Unable to update Worlds & Texture packs from the marketplace.

Have 2 worlds Flagged for an update, but when pressing the "Update" Button, nothing seems to happen.

Steps to Reproduce:
1. open Minecraft.
2. Go to Marketplace.
3. Update a map.

Observed Results:
When pressing the "Update" button, it shows you the "Importing Content" downloading screen, when it has been downloaded, a notification pops up on top claiming that the download has been completed, but when you check on the world/pack in the marketplace the update button still remains.

Expected Results:
press the "Update" Button, imports content, shows notification that the Download has been completed, check on the pack via the marketplace and "Create New World" button should appear.