i have this exact same error. also, the installation manual says this:
Set permissions for the following directories:
chmod 777 (drwxrwxrwx) : data/media
chmod 777 (drwxrwxrwx) : data/thumbnails
chmod 777 (drwxrwxrwx) : data/tmp_media
chmod 777 (drwxrwxrwx) : data/tmp_thumbnails
but these folders do not exist on my server. the only folder under the folder "data" is "database"
help?