Thread:Project:Support desk/cannot upgrade to 1.18 from 1.17 - APC issue/reply (3)

I had the same issue, and used the above fix and I was able to upgrade. However, once I restore the setting to $wgMainCacheType to CACHE_ACCEL, the problem comes back. Does setting $wgMainCacheType to CACHE_ANYTHING stop mediawiki from using the PHP accelerator? I have XCache 1.3.1 installed.