Version 4 of the BNU-Bot installer has received significant updates. I have added a progress bar to monitor the download status, and logic to detect when running in OSX, so it can build an application. Furthermore, the installer will no longer re-download files that already exist unless the SHA1 is incorrect. This means you may also use the installer as an effective updater, since the auto-update mechanism was broken prior to 2.0.0 Release 8 (r844).