Clears all "User Registration Options" at modify...
 

When I modify and save ANY option at "User Registration Options" then all the "Default Registration Options" get unmarked and the only one option marked is "Receive Admin Emails"...

So if I want to mark and save the rest of the options, I have to set to "NO" the "Enable Plugin/Hook System" option, change the "Default Registration Options" and then set to YES the "Enable Plugin/Hook System" option.

Any ideas? I know it is because an installed Plugin, but, if you can help me, maybe you saw this at your forum and fix it any plugin at special.

Thank you :)

Unfortunately you can only be helped by the author of the plugin, turn off all plugins and enable each one in turn and perform your task, when you find out which one it is post in the mods thread and ask the author.