Permission denied when importing app

I am trying (and failing) to follow the guide for getting the javascript address sample app installed. One of many problems I am encountering is this error when I attempt to import the package:

Api Error
unlink(D:\DSP20/php/tmp\add_javascript.dfpkg): Permission denied

can i change to location or manually install it?

this is a local bitnami install

I have the same issue with windows installer.

I am also having this issue in Windows. Looking for a fix.
In the mean time, you can always download the zip file from github, then upload it to your file storage service. Then manually create an app in the Apps tab.