The screensaver will not work with any 2.x version of JPPF.
We have abandoned it as we were relying on the screensaver sdk
project for the implementation.
Unfortunately, this project seems to be pretty much dead: the last code commit was about 3 years ago.
The problem is that the screensaver does not work on Windows 64 platforms, including XP, Vista, 7, 2008, etc... That's a severe limitation, which is why we chose not to include it anymore.
We have kept the integration code we had in 1.9.x, and we hope to have the opportunity to write a .Net screensaver that runs a JVM, but it is not a currently a high priority task in our list.
I apologize for the inconvenience.