Error comes out after Gear Pro reads ddp file

Hi,
Here I have a DDPid file v1.0 completed on a sadie workplace. This DDP picture refers to a picture.DAT file. Gear Pro (http://64.62.159.82/) can read those files but after that the following error happens:
ERROR: Track 12 error (image file c:mcd1IMAGE.DAT, Offset 693202608 bytes, track size 79688112 bytes):
;Track size and image offset do not match with actual file length (772537920 bytes).
;Log file closed at 2008 10 03 12:11
Please help me solve this. Thanks a lot.
