Can't reproduce this error. I assume webstart client gives you download error. Can you provide more details?
- are you trying to use installer 1.2.0.BETA3?
- can you web start any other applications
There is a simple workaround you can use. Just download installer jar and install in offline mode. You don't need to use webstart.
I bet you are right. It is probably webstart.
I was using the Beta3 as you said.
I will download the installer jar instead.