404 in custom post type feed with mistake permalink

I have a wordpress site that uses this custom post type : "movie" in theme.

I changed permalinks to "%postname%.

Every things is ok but google gives a toll 404 error for any custom post type articles.

I checked the errors in webmaster tools and found every article in custom post type has this link:"http://example.com/movie/article-name/feed/"that is not exist (404 error).

The issue is here:

<link rel="alternate" type="application/rss+xml" title="someTitle" href="http://example.com/movie/article-name/feed/">

But by changing that address to this:"http://example.com/article-name/feed"it has ok.

I changed permalinks after installing new theme.

Please help me.