pgdump error "Could not open file pg_clog/0B8E: No such file or directory"

I am receiving an error when running a pg_dump. These are older legacy
systems and upgrading them is not in plan.
Any help will be appreciated.

CentOS 5.3 (64bit)
psql (PostgreSQL) 8.3.11

full error message:
pg_dump: SQL command failed
pg_dump: Error message from server: ERROR: could not access status
of transaction 3101708884
DETAIL: Could not open file pg_clog/0B8E: No such file or directory.
pg_dump: The command was: COPY blob_store.blobs (blob_id, mime_type,
binary_data, create_ts) TO stdout;

Command used, pretty standard
pg_dump -Fc <dbname> -f <outfile>

TIA,

Jesse Waters