good morning

I'm experiencing a weird problem with my export dumps...or the lack of it.

I'm getting an error i've never seen before in the exp utl.I've done many imports & export over the past 3 years, but never this...

Is there a "cat" script that I can run or anything else to rectify this problem. I'm on windows 2000 proffesional,Oracle
EXP-00056: ORACLE error 31600 encountered
ORA-31600: invalid input value EMIT_SCHEMA for parameter NAME in function SET_TRANSFORM_PARAM
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "SYS.DBMS_METADATA_INT", line 3926
ORA-06512: at "SYS.DBMS_METADATA_INT", line 4050
ORA-06512: at "SYS.DBMS_METADATA", line 836
ORA-06512: at line 1
EXP-00000: Export terminated unsuccessfully

thnx in advance