mvn gwt:run java.lang.IllegalStateException: No Constructor <New id="tx" class="org.mortbay.jetty.plus.naming.Transaction"/>

[Y2i]

Hi,

I am porting a GWT 2.4 project to maven.  When I run mvn gwt:run I'm getting the following error in Jetty log:

java.lang.IllegalStateException: No Constructor: 

<New id="tx" class="org.mortbay.jetty.plus.naming.Transaction">

  <Arg>

    <New class="com.atomikos.icatch.jta.UserTransactionImp"/>
   </Arg>

</New>

on com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload@2c40072a{...} at org.mortbay.xml.XmlConfiguration.newObj(XmlConfiguration.java:631)

This post says that the reason for the failure is a duplicate javax.transaction.UserTransaction.  I indeed had a duplicate UserTransaction:

hibernate-core was indirectly pulling jta
jetty-plus was pulling geronimo-spec-jta
and both jta and geronimo-spec-jta include javax.transaction package.  I excluded jta from jetty-plus, but I'm still getting the same error when running mvn gwt:run.
The command line that mvn passes to java contains a long list of jars specified using -classpath option.  I grepped through all jars, only geronimo-spec-jta defines UserTransaction.

Has anyone experienced this before?  Your help would be greatly appreciated!

[Y2i]

The java process started by mvn gwt:run opens the same file twice:  one file in ~/m2/repository, another file in ${webappDirectory}/WEB-INF/lib.  geronimo-spec-jta, that contains UserTransaction, is also on the list of open-twice files.

Could that be a problem?

Thank you in advance!