TField.AsDateTime Invalid Floating Point error messages

Hi all,
Using Paradox db's with TTables, in D4, i've come across a-lot of Invalid
Floating Point error messages when accesing (reading) or writing variables.
Anyone knows what this could cause ?

I'm using D4 with update pack #1/#2 installed.

ThanX a million!

Anton Ekermans
ekerm...@yahoo.com