strange dependency error

[nicolas de loof]

Hi
some guys in my dev team repport an error during CXF code generation :

[INFO]
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO]
------------------------------------------------------------------------
[INFO] org/apache/xml/serializer/TreeWalker

Adding a dependency to the plugin declaration fix this issue

          <dependency>
            <groupId>xalan</groupId>
            <artifactId>serializer</artifactId>
            <version>2.7.1</version>
          </dependency>

I can't find how the environment differs from other ones that share same OS/
JDK / maven version and don't fall into this issue.

Just to let you know ...