Relations not working

Hi,

Like your plugin. Wrote articles about it. The problem is that it no longer work on my network.

Is there a limit to the amount of posts (I mean relations) that your plugin can manage ?

I’m trying to debug. When I select a relation (dropdown menu on admin panel > edit post) and then click on update it no longer saves it.

http://ww.wp.xz.cn/extend/plugins/multisite-language-switcher/