My suggestion is this - it's most likely due to the MySQL database timing out (i.e. a transaction took longer than your current timeout).
That it's only happened twice, days apart, probably means the current timeout is marginal, rather than 'wrong'.
Suggest you try increasing MySQL...
My fellow Admin did some digging - we have the (mis-)fortune to be using a server with cPanel/WHM and this problem is a 'known issue with EasyApache' apparently. See these links for more details:
http://forums.cpanel.net/f442/post-upgrade-apache-2-4-php-problems-339242.html...
OK, as above the Apache log has no errors for the (attempted but failed) XenForo installation(s).
A search of the XenForo manual uncovers no mentions I can find of a log file - am I missing the point of your question?
The only error I can see is the one in the screen grab, ie:
Where else...
You say 'the log' as if there is but one log file, are we talking about the Apache web server log or is there a XenForo log file I've yet to find?
By the way, thanks for removing the inadvertent password - grabbed the wrong screen shot. Thanks anyway :)
ETA:
Apache log is clean (no errors for...
Hello,
I've installed XenForo on a test server successfully, but today was attempting a fresh, clean, install of XenForo v1.2.2 on the real server, with a brand new, empty, database - and after the config.php settings have been accepted, the installation fails with a 'Server Error' reported...