If a network drive has already been mapped to a given drive letter that the monitor would normally use, windows will not properly mount the SD card from the monitor. This can also cause problems for Motion Studio when it attempts to import/convert data files from the monitor. You should un-map the network drive from the given drive leter. See http://support.microsoft.com/default.aspx?scid=kb;en-us;297694 for details.
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