I have now found now that it is indeed Nprinting who causes this problem.
in the PixelPerfect editor you can change the number format by clicking the drop down menu on a cell and then choose "Format String". If i type in
#,##0 (comma) there: It gives me the example: 123.456.789 (2 points)
#.##0 (point) there: it gives me the example: 123456789,000 (1 comma).
Now, I know we deal with numbers and points differently here than in the US, so I seems my question has changed to:
How can I alter how Nprinting deals with comma's and points? is there any localization setting i can change?
Thanx in advance