Hi @christophe.
We built Emotiv Xavier Control Panel as 32b system. so, when you used Java 64b, have a issue on loading a profile from a 32b apps, in this case is Control panel. but it works fine on Java 32b.
if you want to use Jave 64b with a training profile, the profile should create from a app 64b.
We are working on this issue and try to fix it as soon as possible.
Thank Christophe