I removed the field, added another with a truly unique name, but again on save the field goes empty.
The server is a pretty standard linux hosting server. I haven’t installed any WordPress specific caching.
I have exactly the same problem. Only it’s with WP3.8 and ACF 4.3.4.
I disabled all other plugins. I have no caching plugins enabled.
I have a custom image field, whatever I upload there gets removed again on save. I tried different browsers and deleted and re-uploaded the plugin files. Even made a duplicate of the field. That has the same problem.
