A simple fix for wp-cache2 blank pages
I had a serious problem with this installation of WordPress because I was getting blank pages while using wp-cache2.
The fix is to change ob_end_clean(); to ob_end_flush(); on or around line 220 of wp-content/plugins/wp-cache/wp-cache-phase2.php.
This simple sed script will do it for you if you can access your WordPress installation at a command line: sed -i 's/ob_end_clean/ob_end_flush/g' wp-content/plugins/wp-cache/wp-cache-phase2.php. Make sure that you’re in the base directory of your WordPress installation.
I found the fix for this at the WordPress support forums.
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