BuddyPress.org

Erwin you have to connect to the wp plugins repo for your plugin such as:

http://svn.wp-plugins.org/<plugin slug>

Where your plugin slug is the filename of the download zip, minus the .zip part. Then you can ‘checkout’ a copy of the repo which is your working copy. In tortise svn it’s right click in the directory you want to create a copy and ‘svn checkout…’

It’ll ask you the url to the repo and the name of the dir to put things in.

https://wordpress.org/extend/plugins/about/faq/ for kinda how to take it from there.