USB Storage not working. Help please

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http://forums.androidcentral.com – So I have a new 9'7" Android 4.0 Ice Cream Sandwich Tablet and I was able to store things like audio and movies on it. I installed some apps, including Documents to Go. I tried to put some documents on it but now the USB Storage will not work one bit. I tried changing USB Ports but then it said it is not installing properly. I have tried using the de-bug mode but that doesn't work either. What can I do??? I'm new with tablets (HowTos)