Just did some testing of plunge on Windows 7 -64 bits with an old Nvidia 6200 graphics card.
The first run the installer hung without any error messages on the message that it was unpacking Kivy. After 30 minutes I decided to restart my computer and try again. Kivy was downloaded again and this time the unpacking went successful.
It then asked to install a shortcut on my desktop which I did. Starting the shortcut resulted in a popup with Chinese characters. Not useful. Given some known issues with Kivy are related to openGL and certain graphic cards, I decided to update to the latest Nvidia driver. That did the job, it now works nicely. Looking forward to the addition of other exchanges!