Message Oracle ORA-35078 - (QFHEAD05) An EIF extension file header for string is not in the correct format.

ERROR(QFHEAD05) An EIF extension file header for string is not in the correct format.
CAUSEAn EIF extension file in multi-file IMPORT did not contain correct header information.
ACTIONCheck to be sure that EIFEXTENSIONPATH is set correctly and that all the extension files for the current IMPORT were created by the same EXPORT command as the main EIF file.