SSI fails silently

Starting sometime in the afternoon of July 11, my SSI-based page hit counter started to fail silently. When I load the page from the Web, nothing appears where the SSI command is in the html page – no error message, not the original , evidently not a single character of output.

I hadn’t changed anything, and I can’t find any indication of what is going wrong. I’ve double- and triple-checked file permissions, etc., etc. While I am still looking to see if I missed anything stupid, the outlook is gloomy.

Server: kiki
Software: Multicount 3.0 (2002-06-16,

Did DH change anything on Sunday that could cause this? Is anybody else having a similar silent-failure problem (particularly on kiki)?