Can't reinstall Google Play after 1.6 update

I drag Google Play from Widgets on to the main screen, authorise it when it asks, and then it shows up on the screen. When I click it, the screen just flashes white, but nothing happens.

Nothing is greyed out, similar to other users posts.

Try to run the update to 1.6 again (if not possible otherwise, do it manually).

If you own a FP1 (not FP1U) and have not done it already, run the Unified Storage Partition upgrade.