CPT
This could be a whole bunch of things, it may be something as simple as your data card not "pre-flighted" properly, however it is likely to be something more.
Without going into too much depth here, if you fly for the company I think you do, then I know the HUMS expertise is lacking there, however, you have a support agreement with the HUMS manufacturers, therefore I suggest you (Or your engineers) raise a problem report and get the guys at the HUMS Support desk on the case, from what you have said they should be able to fix the problem without too much fuss.
