Error bptm(pid=9008) The tape device at index -1

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Error bptm(pid=9008) The tape device at index -1 has a maximum block size of 524288 bytes, a buffer size of 1048576 cannot be used
11/15/2014 9:49:19 AM - Warning bptm(pid=9008) media id M380L5 load operation reported an error