kris_IV on "[Plugin: Facebook] App ID always empty..."

Facebook plugin 1.3.1

My problem is simple. I have Facebook application, APP ID and App Secret.
I install plugin on my wordpress and I put APP ID and App Secret to this filed.

But when I click "SAVE" everything disappear and I have second time empty filed. Like on the picture bellow.

[URL=http://imageshack.us/photo/my-images/33/przechwytywanieqgj.jpg/][IMG]http://img33.imageshack.us/img33/6734/przechwytywanieqgj.jpg[/IMG][/URL]

Uploaded with [URL=http://imageshack.us]ImageShack.us[/URL]

http://wordpress.org/extend/plugins/facebook/