My ipad2 stopped accessing my movies via file sharing. My iPad3 still works. Has my iPad2 become obsolete?

I used to be able to access my movies at home via file sharing on my computer's iTunes. My ipad3 still works beautifully so I'm guessing something is up with my ipad2 that no longer works. This would be very annoying considering I use my ipad2 as my work iPad and I cannot swap with the kids ipad3 because it doesn't have 3G and therefore can't be use outside of wifi.

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