Whoops! The default skin for your wiki, defined in $wgDefaultSkin as vector, is not available.
Your installation seems to include the following skins. See Manual: Skin configuration for information how to enable them and choose the default.
monobook / MonoBook (disabled)timeless / Timeless (disabled)vector / Vector (disabled)skins/ directory from it.LocalSettings.php to enable all installed skins:wfLoadSkin( 'MonoBook' ); wfLoadSkin( 'Timeless' ); wfLoadSkin( 'Vector' );
LocalSettings.phpDiff selection: Mark the radio boxes of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.