Making sure the contenttype cache is up to date will ensure that you can view, download and use the latest libraries. This is different from updating the libraries themselves.
Warning! This may have security implications as it allows for uploading php files. That in turn could make it possible for attackers to execute malicious code on your site. Please make sure you know exactly what you're uploading.
It looks like there are no content types installed. You can get the ones you want by using the small 'Download' button in the lower left corner on any example from the <a href="%s" target="_blank">Examples and Downloads</a> page and then you upload the file here.
