Troubleshooting: WordPress Error - Unable to Create Directory
WordPress Error: Unable to create directory /wp-content/uploads/2009/mydir/summer/ Is its parent directory writable by the server? In order to fix this error, please log in to the WordPress dashboard ( http://www.domainname.com/wp-admin ) and access the Miscellaneous settings. Find the uploads path specified, and it will most likely be specified as:
wp-content/uploads/ - without a beginning slash
After the first " / " is deleted, save settings, and that will fix this error.