I have the same issue, and i have had for a while.
Ive seen some where that its only an issue on a windows system, but havent testet it for myself.
I tryed version 2.0.0, and it dosnt have this issue.
BTW: i just found this, havent tryed it yet, but going to asap..
http://wordpress.org/support/topic/plugin-advanced-custom-fields-fix-fields-disappearing-after-clicking-save-field?replies=1
The Fix Works :D!! just tryed it, i can now save my fields.. yay.!
OK I have to test this solution (thanks a lot for this).
I have seen aswell that maybe the issue was linked to an Windows system but I’ve checked with my hoster and seems that my website is hosted on a linux server so I not really sure it is linked to the system.
I will try your solution and say later if it works or not.
Thanks again for the reply.
M
OK I tried the link above but cann’t find the wp_xxxxx_acf_fields in my db… !!!
I tried to uninstall and install again but no change in my db. So I can’t try the solution above… snif.
Is there any way to know the supposed db structure after installing the ACF plugin ?