Thread:Project:Support desk/cannot upgrade to 1.18 from 1.17 - APC issue

Yesterday I tried to upgrade from 1.17 to 1.18. It wasn't 100% clear how to do this given that there was a warning not to install 1.18 over previous installs, so I downloaded 1.18, unpacked it to a new folder, deleted my old 1.17 (backing the folder up first) and copying all of 1.18 over to the wiki directory. Running the upgrade script got me this error:

CACHE_ACCEL requested but no suitable object cache is present. You may want to install APC.

Backtrace:


 * 1) 0 [internal function]: ObjectCache::newAccelerator(Array)
 * 2) 1 /home/liquidfr/public_html/lf_wiki/includes/objectcache/ObjectCache.php(62): call_user_func('ObjectCache::ne...', Array)
 * 3) 2 /home/liquidfr/public_html/lf_wiki/includes/objectcache/ObjectCache.php(50): ObjectCache::newFromParams(Array)
 * 4) 3 /home/liquidfr/public_html/lf_wiki/includes/objectcache/ObjectCache.php(23): ObjectCache::newFromId(3)
 * 5) 4 /home/liquidfr/public_html/lf_wiki/includes/GlobalFunctions.php(3600): ObjectCache::getInstance(3)
 * 6) 5 /home/liquidfr/public_html/lf_wiki/includes/Setup.php(402): wfGetMainCache
 * 7) 6 /home/liquidfr/public_html/lf_wiki/includes/WebStart.php(157): require_once('/home/liquidfr/...')
 * 8) 7 /home/liquidfr/public_html/lf_wiki/index.php(53): require('/home/liquidfr/...')
 * 9) 8 {main}

I tried installing APC but as it turns out my VPS runs on something called suPHP and I need to change the handler, which I don't know enough about to be comfortable with. Can someone help me out here? Thanks!