Hi Paul,
I may be able to assist you with this as I specialise in Pick and D3. If I cannot help you then I probably know of someone who can.
In the first instance I would recommend getting in touch with the vendor of your software application for their support. If they cannot help you I would suggest getting in touch with Tiger Logic for assistance. Since I am not sure of your geography you can find the nearest contact office at the following link:
TigerLogic Corporation - Corporate Contact Information
If you tell me your location I can also probably give you details of your nearest D3 reseller as they could probably also provide you with excellent support.
If all else fails I would be happy to have a look at the file for you myself. Get in touch directly if you want me to take a look for you.
Kind Regards
Glenn