Configuring wuala on headless linux server impossible

I can't seem to find any documentation about how to configure the "new" wuala version (133) on a headless linux server (or a 64 bit linux, which has basically the same problems, because gui doesn't work there).

Here is what I tried:

./wuala
#starts wuala
./wuala login Deelkar password
# of course I put my real password there, seems to work fine, adds another thread in "ps"
./wuala help
# this seems to do nothing, but after about 5 seconds I get the following:
Wuala closed because of an unexpected error.
If you want us to know about this problem, please send this text to bug_high_prio@wua.la.

Date: Wed Jul 16 20:35:59 CEST 2008
OS: Linux 1.6.0_03 Sun Microsystems Inc.
Memory: 266403840 max 4248224 free 5177344 total
Local Host: server15/10.11.96.115

java.net.BindException: Address already in use
at sun.nio.ch.Net.bind(Native Method)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:119)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:52)
at com.wuala.loader2.starter.InstanceSocket.<init>(InstanceSocket.java:37)
at com.wuala.loader2.loader.domain.ApplicationInfo.startInstanceSocket(ApplicationInfo.java:105)
at com.wuala.loader2.Loader2.startInstance(Loader2.java:64)
at com.wuala.loader2.Loader2.start(Loader2.java:53)
at com.wuala.loader2.Loader2.main(Loader2.java:116)

the same with "-help" and "--help"
</init>