after upgrading to 2.8.4 my front end pages were all white. i could log into the back end and see all my info, but previewing or just trying to type in the pages all resulted in blank pages.
i tried disabling and deleting plugins, using default themes to no avail. i just reverted back to my old version, but noticed something odd before doing so . . .
my install is located in a subdirectory and somehow during the upgrade another copy of the subdirectory was placed inside of itself (http://www.domain.com/wpinstalldir/wpinstalldir)
this was not the case before upgrading. i wasn't sure what caused this or where to look for the culprit. before i try to upgrade again, does anyone have any suggestions?