[Mediawiki-l] Wiki upgrade

[Jani H. Lahtinen]

I upgraded my wiki from what was 1.4.6 running on RHEL 3 Linux, or 
something close as damn. I now had 1.4.10 on FreeBSD. I made a test 
install in a directory called testwiki and then installed some 
extensions, such as Graphviz and Timeline. I also checked that LaTeX 
formulas worked. Everything seemed fine, so I renamed the site to its 
original form. Then I rebooted. Now the main page is gone and the 
extensions stop working. I even renamed the thing back to testwiki and 
the main page and the extensions work again, but latex is gone for good. 
What the?