I'm posting this in order to help out any developers having trouble developing locally, grabbing the qlik servers' API files.
I've been having trouble getting the "require.js" with the latest patch, resulting in a "Network error" from the a file called something like "vendors~common-amd~connector-amd~extension-amd~setup-mashup.js"
This is due to the connection not being secured from the dev side (http->https).
What you can do is generate a certificate for development purposes and use it with an https supported webserver. https://certificatetools.com has a nice interface that can help generate the file or, if you prefer the command line, you can download OpenSSL.
My main issue was Chrome. You need to install the certificate on your machine, and run an instance of chrome with the following arguments, in order to ignore the cross-origin rules: