I have noticed that CSE is sometimes thrown out by source that looks something like
<tag1 attrib1=value1">
(The example I saw was similar to this but I can't recall the URL. It caused errors for several subsequent lines.)
I found an example of this at a 37signals site (which surprised me).
It would be good if CSE recovered from this sort of thing more quickly and didn't issue so many 'knock on' errors.



