Dump Restore

Hi,
        I was restoring the dump file of a database and i got this error:
ERROR:  copy: line 2, CopyReadAttribute: end of record marker corrupted.
FATAL 1:  Socket command type unknown
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
        before or while processing the request.
PQendcopy: resetting connection


Kindly let me know what's wrong with the file.

KAmal