>I tried your suggestion and had a similar problem. The error says, "Error reading file." I was doing a test between two sites and used the:
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>"USE \\SERVER\VOLUME\FOLDER\TABLENAME" mapping rather than alpha letter mapping and then the test I ran was the following COPY TO C:\JUNK. The process failed at record number 1865 out of 9881 records; this has been the same exact problem all along. There is a disruption of some sort.

Check thread after message #715535 - it may be a similar problem.

I've had various versions of Windows networks over the years behave in a similar fashion, lose network mappings or drop connections in the middle of long file operations for no good reason. There was always some obscure setting on the server to be changed, about which only a few gurus knew. This may, or may not be one of those. I feel your pain and wish you luck with this.