Hi Werner,
well, it is definitely good to know that you were able to workaround the problem! But it doesn't help us to find the problem and to correct it in future versions - so would you mind anyway to send me the export and import command you used + the CREATE TABLE statement and if ever possible the one row in the data file that failed to import.
The Loader uses usually the INTERNAL representation of date and time fields independently how they are defined. So this error is rather strange and would like to have a closer look.
Thx,
Steffen