Sorry, my bad!
Unfortunately, in the latest release, not all dependencies were packaged with the samplelauncher.
We already solved the problem and will release an update for the samplelauncher tomorrow.
In the meantime, you can download the following zip and extract it to the root folder of your samplelauncher. That should fix the sample launcher at least.
Regarding the samples not starting, did you already try running
sudo apt-get install g++ libglu1-mesa-dev
as described here: http://v-play.net/doc/vplay-installation/#ubuntu-linux