I'm not surprised that this gives problems. 8.0.5 is desupported for ages now (June 2000) so contacting Oracle support won't help either.
this is what OERR tells me:
EXP-00054: no storage definition found for partitioned object (name)
Cause: Could not find the storage definitions for partitioned table/index.
Action: Record the error messages that follow and report this to Oracle Worldwide Support as an Export internal error.
Why would one use a desupported RDBMS version? Not a production environment I hope...
MHE