The main difference between the old and the new OpenVT platform is -- apart from a software update, which will in the future hopefully make the platform a safer place -- that the URL has changed from virtual.openvt.eu to openvt. eu.
This is important if you have local repositories, which still point at the old URL as origin. In order to update these, open a terminal and browse to the folder of your respective repository. Now, check out the git configuration: