Broken Experience #2

Here is another gem of an error message from Microsoft.  Got this one on Microsoft Sharepoint while trying to publish a (perfectly functioning) RSS feed of a blog.  It worked fine until I got this:

First, why do these messages always reference "unexpected errors"?  Is there another kind of error?  Also, there are no links to these mysterious "logs" (Plural??), no explanation of what went wrong...  How difficult can it be to pull in the data from the error log and tell you right there what the problem is? 

I especially like the helpful hint to "correct the problem" once you find out what it is.  Because I wouldn't have thought of doing that at all...