Dear xakplant
Your code is does not working.
Please, can you give a normal version of this plugin?
Check your:
1) max_input_nesting_level
2) max_input_vars
in your php configuration, I set it to:
1) max_input_nesting_level=256
2) max_input_vars=5000
and i`ts fix my problem.
Hope its help
s you.
P.S. Sorry for my bad english)