Polls / Home error

running 1.5.18, and when set menu to Community Polls » Polls / Home, I got the below error:

500 - View not found : communitypolls,html,communitypollsView

You may not be able to visit this page because of:

1. an out-of-date bookmark/favourite
2. a search engine that has an out-of-date listing for this site
3. a mistyped address
4. you have no access to this page
5. The requested resource was not found.

If I set the menu link to user poll, then it's ok.