On Tue, Jul 5, 2011 at 5:34 PM, Ragansi <ragansi.ircs(a)gmail.com> wrote:
I'm working on a wiki that has been sitting at
version 1.3.9 for
"quite some time" without upgrades. I've not been able to upgrade beyond
1.6.12. The upgrade path is direct from that point. I download the
tarball for 1.6.12, unpack it, run the update.php script and all is
well. 0 problems.
The pages load fine, everything is editable, the CLI returns no errors
or warnings. What strikes me as odd is that if I try and do a "direct
upgrade" from 1.3.9 to anything beyond 1.6.12 all I get is a white
screen.
[snip]
I'm not all that sure of what the problem is at
this point, or even
where I should be looking for answers. I've tried enabling logging,
been googleing this for over a week at this point, and I'm not even sure
which direction to go next. A pointer in most any direction is utmostly
appreciated.
Looking at the log results and identifying the error messages in it probably
will help! You don't say that you've done this, so it sounds like you've not
had success at even finding your logs in the first place; without looking at
the data, you'll never get anywhere.
"White screen" problems usually mean you're encountering a fatal PHP error,
but PHP is configured not to display error messages in web output. This
usually means your PHP errors are being logged to a file or the system log
-- google for the PHP settings 'error_reporting', 'display_errors',
'error_log', etc and learn how to use them and how they're set up on your
system.
-- brion