output truncated in a group

We are facing a strange issue with a Buddypress group at Hpathy.com.

http://hpathy.com/groups/

Out of all the groups, in one particular group, the page output gets truncated midway, in forum and members tab (not in any other tab).

If the forum page has to show 20 threads, the output stops at the 7th thread. The sidebar and the footer also do not load on that page.

Here is a link to that specific forum

http://hpathy.com/groups/hard-links-to-hundreds-of-save-able-homoeopathic-books/

Here is a test login that is subscribed to this group

testman / mantest1

This is a closed group. If I set it as open for testing, the home page of the group doesn't show any group activity. It just says no activity found.

Can an expert here look into this and advise what to do.

Since this is happening with just 1 group out of 40, I am unable to identify the issue.