Attempted to write past end of media error on a VTL that resides on a DataDomain. (4045130)

When running NDMP backups from the customers Netapp Filer (ONTAP 7.3.2P6), the jobs fail when they fill the first VTL media:

Error 2010/05/10 17:45:29 928 Media BACKUP1 BACKUP1

\1.1.1.1\backup\coniston1a\vtl2\vtl2\drives\1: had media error

With sub text:

DEVCOMMO:07628 59 0 164528 Before at 8:99941
MEDWRITE:07628 184 0 164528 Device write data out: EOM WARNING
DEVMGR :07628 107 0 164528 Space Remaining (BEGIN)
DEVMGR :07628 108 0 164528 Total data written 262144
DEVMGR :07628 109 0 164528 Segment Length left 26197622784
DEVMGR :07628 110 0 164528 Old segment estimate 0
DEVMGR :07628 784 0 164528 At EOM
DEVMGR :07628 571 0 164528 Space Left 0
DEVMGR :07628 245 3 164528 New estimate : 262144
DEVMGR :07628 246 3 164528 Existing estimate: 0
DEVMGR :07628 117 0 164528 New space left estimate is bigger than last estimate
DEVMGR :07628 99 0 164528 Send Space Left (BEGIN)
DEVMGR :07628 239 3 164528 Space estimate: segment remaining 0
DEVMGR :07628 240 3 164528 segment length 262144
DEVMGR :07628 241 3 164528 current position 262144
DEVMGR :07628 242 3 164528 data written 262144
DEVMGR :07628 243 3 164528 offset 0
DEVMGR :07628 102 0 164528 Send Space Left (END)
DEVMGR :07628 123 0 164528 Space Remaining (END)
DEVDISK :07628 43 0 164528 Get Position
DEVCOMMO:07628 60 0 164528 After at 8:99942
DEVDISK :07628 43 0 164528 Get Position
DEVCOMMO:07628 59 0 164528 Before at 8:99942
DEVCOMMO:07628 2 0 164528 ----->>> PAUSED <<<-----
DEVDISK :07628 43 0 164528 Get Position
DEVCOMMO:07628 60 0 164528 After at 8:99942
DEVMOVER:07628 643 0 164528 Paused: reason 1 seek position 0
DISKFILE:07628 100 0 164528 \1.1.1.1\backup\coniston1a\vtl2\vtl2\drives\1 bIsProtected = FALSE
DEVDISK :07628 43 0 164528 Get Position
DEVMOVER:07628 618 0 164528 Paused
DEVMOVER:07628 619 0 164528 Unsupported = 0x70
DEVMOVER:07628 620 0 164528 Flags = 0x8
DEVMOVER:07628 621 0 164528 File Number = 8
DEVMOVER:07628 622 0 164528 Soft Errors = 0
DEVMOVER:07628 623 0 164528 Block Size = 262144
DEVMOVER:07628 624 0 164528 Block Number = 99942
DEVMOVER:07628 607 0 164528 Paused
DEVMOVER:07628 608 0 164528 State 3
DEVMOVER:07628 800 0 164528 Mode 0
DEVMOVER:07628 609 0 164528 Pause Reason 1
DEVMOVER:07628 610 0 164528 Halt Reason 0
DEVMOVER:07628 611 0 164528 Record Size 262144
DEVMOVER:07628 612 0 164528 Record Number 99941
DEVMOVER:07628 613 0 164528 Bytes Moved 26198933504
DEVMOVER:07628 614 0 164528 Seek Position 0
DEVMOVER:07628 615 0 164528 Bytes Left to Read 0
DEVMOVER:07628 616 0 164528 Window Offset 0
DEVMOVER:07628 617 0 164528 Window Length 18446744073709551615
DEVMOVER:07628 646 0 164528 Media at record 99942 written 26199195648
DEVMOVER:07628 757 0 164529 bEndSegment = TRUE
MEDWRITE:07628 152 0 164529 Close Write Data Out (BEGIN)
DEVDISK :07628 95 0 164529 Close Write Segment
DISKFILE:07628 121 0 164529 Attempted to write past end of media
MEDWRITE:07628 276 0 164529 Failed to close write segment