problem solved, my JSON response had an invalid character in the response text.... shame on me!
Another thing:
Is it possible to toggle the Flexigrid between two "modes"? I would like to be able to show two tables, only one at a time. When I create two tables and show/hide them, Flexigrid shows two tables but only the grid gets hidden/shown.
Thanks in advance!
Martin
EDIT: I helped myself creating a DIV around two different Flexigrids and then hiding/showing them.