My GT-P5210 tablet drives me crazy, the way it behaves when I plug it into my computer. The first thing that happens is the "Adobe Elements-Photo Downloader opens and the only way to get rid of it is in the Task Manager. When I'm moving around in the folder tree sometimes the hour glass comes up, and stays, at other times I am able to drill down into the external card and manage files! Sometime I can move video to the tablet, other times the KitKat issue pops up; which is the issue with not being able to copy files to an external drive; or maybe even an internal one; don't know haven't tried that. I don't get it. Shouldn't I be able to work with the tablet's "drive" just like any other flash drive? Any why is it so erratic; works sometimes and not at others? Sometimes I get messages that say the tablets been disconnected, when clearly it hasn't! WMV files an another issue. Sometimes they work, sometimes they get "converted"; automatically. Today I created an WMV in my video editor that played perfectly, everywhere except on the tablet, where it made everyone really tall and skinny! At this rate I'll never get anything done!