Corrupted end of Record

When attempting to load in (via COPY) two files of ~700 and ~12,000 records,
I get the following:

ERROR:  copy: line 694, CopyReadAttribute: end of record marker corrupted

ERROR:  copy: line 11987, CopyReadAttribute: end of record marker corrupted

This is the line that COPY requires at the end of the file (i.e. backslash
period - \.)

If I remove the line, the load works fine.
I have loaded other files using the same last line and they work fine...

Any ideas?

TIA,
Herb Blacker