Pertinent to Jake's question, if your flash drive is formatted as FAT32, then there is a 4 GB limit as to the size of the file that can be copied - so, we need to know the formatting and also the type & size of files involved.
If the file(s) is under 4 GB, have you tried to copy other files, i.e. is it a specific file or multiple files - if the latter, then the flash drive may be the issue - have you tried other USB drives? Dave
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