Do a reset on your iPad, it will not change anything and is just like rebooting a computer
Hold the power off button and the home button simultaneously, keep holding them in and you will see the power off slide appear and disappear, wait until you see the Apple logo appear before releasing the buttons. It will take a little longer for your iPad to start. Let us know if this makes a difference here.
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iPad 2 64gb wifi/Cellular - iPad Mini 32gb wifi/Cellular - iPhone 5 - Apple TV - MacBook Pro 15"
I have the same problem since I did the upgrade. Is it a bug in the upgrade, if so when will this be resolved? Tried everything but still can't get it to update my applications. Resorting to deleting and reinstalling.
What I do when my apps don't install, is because I forget to press the App. Once I do that I should see the swirl signal thing in the status bar up top. If it does not load still delete the app by holding any app down and delete it once it jiggles. Then go to Settings -> Store -> Click on Apple ID: -> Sign out, and sign back in so it can verify your account. Then open the App store and re download the chosen app. Hope that helps!