$LOAD: TPT10507: CLI Error 302: CLI2: BADBUFRQ(302): Invalid buffer size.

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$LOAD: TPT10507: CLI Error 302: CLI2: BADBUFRQ(302): Invalid buffer size.

Using TPT loader and DataConnector version 15.10.01.00 produce above error. I am using following script to load about 100M rows

DEFINE JOB test_tbl
(
SET TargetWorkingDatabase = 'DLABDVTPTTEST';

SET DCPFormat = 'Delimited';
SET DCPOpenMode = 'Read';
SET DCPTextDelimiterHEX = 'ED';
SET DCPDirectoryPath = 'data/';
SET DCPNullColumns = 'Yes';
SET DCPTruncateColumnData = 'Yes';

SET LoadErrorLimit = 1;
SET DDLErrorList = ['3807','3624'];

STEP TruncTbl (
APPLY ('DELETE FROM test_tbl;')
TO OPERATOR ($DDL);
);

STEP Load_test_tbl (
APPLY $INSERT
TO OPERATOR (
$LOAD ATTR( TargetTable='test_tbl',
QueryBandSessInfo='JobId=' || $JOBID || ';UtilityDataSize=MEDIUM;' )
)
SELECT *
FROM OPERATOR (
$FILE_READER(DELIMITED 'DLABDVTPTTEST.test_tbl') ATTR(FileName='test_tbl_20160211.txt.gz')
);
);
);

Any clue on what could be wrong?

Thanks