Were were losing players due to the flakiness of jnlp as an installation platform, so I've switched to a more standard installer.
*Unfortuniately* for now Chrome is reporting my installer as "malicious" (not sure what other browsers do). I'll have to do some investigating as to how to fix this--I'll probably need to buy a certificate or something. In the meantime, can you try out the new installer for your platform and let me know if it works?
Thanks!
Ken