I have a small problem with my site.

Its the latest version and on the frontpage i have the blog option.

If i create a blogpost and then take the direct link to it and for example post it on facebook some people cant reach the page.

They just get a red line saying "we are sorry  but the page could not be found. Please try the sitemap" (translated from swedish).

But if they go to the mainpage and click the blogpost everything works just fine.

Any ideas?