Error on startup of Syncope 1.0.2-incubating version

[Riccardo Costa]

Hi,
 
I'm just install Syncope 1.0.2-incubating version.
I have done installation from scratch (on tomcat with Oracle Database 10g 
Release).
On startup I have this error:
 
-ERROR in ch.qos.logback.core.joran.spi.Interpreter@77:29 - no applicable 
action for [priority], current pattern is [[configuration][root][priority]]
 
Any ideas about this?
 
Thanks,
Riccardo.