[Plugin: Auto Post Thumbnail] Can't complete publish or edit post

Hi,

I’m using lastest wp and Auto Post Thumbnail.
Now I can’t complete publish or update any posts. It’s loading and don’t go to an end. But this post still publish without thumbnail.

I go to disable Auto Post Thumbnail and everything working normally.

How can I fix it? 🙁

Thanks

http://ww.wp.xz.cn/extend/plugins/auto-post-thumbnail/