I just (tried) upgrading from 1.4.0 to 1.4.11 of WikiMedia. The initial install was done via the control panel, and was working fine. Now whenever I try to navigate I get a 'No input file specified' error.
The site is at: http://twoseat.com/mrc/wiki/
Googling returns a standard answer that this is about the line
$wgArticlePath = "$wgScript/$1";
Which should be changed for the line
$wgArticlePath = "$wgScript?title=$1";
in LocalSettings.php. Unfortunately the file already says that, so clearly that can't be it.
Any other suggestions? I now need to sleep on the problem, but any advice will be eagerly digested in the morning!