Hi @greenish
Thanks for the info.
May I ask what edit screen you are saving the data on? On a normal post / page, or a taxonomy, user, options page?
The issue is either 1 of 2 things:
1. Running out of PHP memory or hitting a max vars limit during the save – easiest way to solve this is check your server error logs and increase the available vars / memory
2. Your field names are too long to save into the DB – this an happen when saving to a taxonomy, user or options page as these tables have different character limits on the meta_key value
Hope that helps find the issue!
Cheers
E
