This feed works fine.
leanweb.org/tag/ealert?format=feed

This one gives me an internal server error.
leanweb.org/tag/riverkeeper?format=feed

If I limit the feed size to 20 both work. If I increase above 65 the first feed fails too.

I need to be able to list a 100 posts on the feed at a time.

I have tried disabling SH404SEF and changing templates but the issue persists so I assume it is a K2 issue.

I am using Joomla 1.5 and K2 2.6.2

Please help!

Really no one wants to help me?