Sort of a pedant's note. Click 'here' links are pretty awful. Aside from all the usual gripes (bad indexing by search engines, &.c), which are largely useless in the case of an error page, it reduces the usability for visitors with disabilities.

It's very hard for, say, a visually-impaired person to have their assistance software try to distinguish between 'here' and 'here'. A better section would be:

<!-- snippet -->
<p>Sorry you have experienced a problem.</p>
<p>You may wish to visit <a href="/index.htm">our entry page</a>; or,
<a href="/index/contact.htm">contact us</a> about the issue.</p>
<p><i>Kind Regards</i></p>
<!-- end snippet -->
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