Hi Sergey,
sorry for my late reply, I was on holiday. I can download it but I conform that I cant find it in the Package Manager. There seems to be an error, as I can see it under "newest extras".
Can you download it from modx.com?
http://modx.com/extras/download/?id=55ca428bdc532f545800f49a
The log file says that the snippet can read the rss feed. Since your post is 5 days old: did you get it working?
Cheers,
Guido
☆ A M B ☆