FYI: I'm running WM6 on a 6700 and still work perfectly for me.
Make sure you are installing to device memory. After install, exit Sprint TV. Copy the included cache folder to the /program file/sprint TV folder, overwriting the current folder and then launch... work perfect.
Make sure that you are connected to wifi or the internet.
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Bad Sector
PPC-6700 ->6800 ->6900 ->Touch Pro2, Sprint
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