I can't create model files
I'm trying to create a model file from a sql database, but pentaho has had an error while saving model. The message is the follow: "an error was encountered while saving models. Please check the log files". I checked the log (localhost.2013-07-31) and I found this:
"Jul 31, 2013 6:57:11 PM org.apache.catalina.core.ApplicationContext log
SEVERE: Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException: Type 'com.thoughtworks.xstream.converters.ConversionException' was not included in the set of types which can be serialized by this SerializationPolicy or its Class object could not be loaded. For security purposes, this type will not be serialized.: instance = com.thoughtworks.xstream.converters.ConversionException: Cannot create java.beans.PropertyChangeSupport by JDK serialization : null : Cannot create java.beans.PropertyChangeSupport by JDK serialization : null"
Someone knows what should I do? Thanks.