Hi guys
Before I test out any attached code, lets first rule out the possibility of your servers running our of memory / vars during the save proccess:
Can you please read over these related threads and try to increase your php settings to allow more data to be saved?
max_vars: http://support.advancedcustomfields.com/forums/topic/cant-add-more-to-repeater-item/
name length: http://support.advancedcustomfields.com/forums/topic/field-group-doesnt-save-properly-when-using-both-repeater-and-flexible-cont/
Thanks
E
