c;ient not starting after 5.2.0b update

Just updated our dev environment to the 5.2.0b build so we can test functionlity.
Found two (?bugs?):
a) RMI tunning doesnt work. Had to disable
SocketFactory.rmiServerFactory=com.servoy.j2db.server.rmi.tunnel.ServerTunnelRMISocketFactoryFactory
in servoy.properties or the servoy service wont start. Gives a java error:

2010-06-05 13:42:59,935 ERROR [WrapperSimpleAppMain] com.servoy.j2db.util.Debug - couldnt instantiatie the rmi socketfactory
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.servoy.j2db.server.ApplicationServer.Za(ApplicationServer.java:269)
at com.servoy.j2db.server.ApplicationServer.main(ApplicationServer.java:438)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.tanukisoftware.wrapper.WrapperSimpleApp.run(WrapperSimpleApp.java:238)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: No valid license found.
at com.sebster.tunnel.impl.vd.(vd.java:9)

If I disable RMI then it starts - but of course then there is no tunneling support :(

b) Smartclient wont start. Gives a parser error on the jnlp file:

Could not parse launch file. Error at line 0.

<?xml version="1.0" encoding="utf-8"?> Servoy Client Servoy Database client system.property.apple.laf.useScreenMenuBar:true

Needless to say it was all working fine before the update. any ideas?
A;

Ok
Dont know why it was wasnt working…but to fix it I:

a) Stopped servoy
b) Renamed old directory to Xservoy
c) Reinstalled 5.20b (so it was a clean install to a new dir)
d) Copied my old servoy.properties accorss to the newly made dir
e) started servoy

Essentially a new install without any additional plug-in but using existing DBs and solutions. Seems to be working (except RMI http tunneling which I have had to disable)