m2 error: Configuration already exists...

[Jason Dillon]

Is there any reason why a rebuild (with no clean) would cause errors  
like this:

<snip>
[INFO]  
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO]  
------------------------------------------------------------------------
[INFO] java.lang.reflect.InvocationTargetException
Configuration already exists: org.apache.geronimo.configs/rmi-naming/ 
1.2-SNAPSHOT/car
</snip>

--jason