I keep getting this error when creating a configuration.

org.hibernate.MappingException: duplicate collection role mapping: bus.BptCase.medications

Stack Trace:

org.hibernate.MappingException: duplicate collection role mapping: bus.BptCase.medications
at org.hibernate.cfg.Mappings.addCollection(Mappings.java:102)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:1922)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:1897)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:325)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:239)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:110)
at org.hibernate.cfg.Configuration.add(Configuration.java:379)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:418)
at org.hibernate.cfg.Configuration.addFile(Configuration.java:260)
at org.hibernate.console.ConsoleConfiguration$1.execute(Unknown Source)
at org.hibernate.console.execution.DefaultExecutionContext.execute(Unknown Source)
at org.hibernate.console.ConsoleConfiguration.buildWith(Unknown Source)
at org.hibernate.console.ConsoleConfiguration.build(Unknown Source)
at org.hibernate.eclipse.console.workbench.ConsoleConfigurationWorkbenchAdapter.getChildren(Unknown Source)
at org.hibernate.eclipse.console.workbench.BasicWorkbenchAdapter.fetchDeferredChildren(Unknown Source)
at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:192)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:76)

Any help would be appreciated. I have the project up and running and am not adding the Hibernate Tools to my project. I can edit the mapping files and everything looks ok and my project works perfectly fine. Not sure what this could be.

you probably just have listed the mappings files twice - once in the cfg.xml and once in the mapping file list.

Thanks that was it.