Wordpress does not recognize plugin

Trying to install CKeditor in wordpress MU (Currentversion) Get following error and plugin is not displayed in list. Files all look to be in right location.

Any thoughts?


Plugin Installed
However, I couldn't verify that it really is a plugin. Hmm.

View installation log

About to extract '/tmp/phpekXWdM'.
Extracting files from /tmp/phpekXWdM...
So far, the type is set to 'plugin'.
Need to load PclZip.
gzopen() found, will use PclZip.
Starting extraction to folder '/home/mcbeck/public_html/wp-content/plugins/'.