I'm working on an Acceleo project, when i generate a maven application, and update its dependencies, I get a pop up window that says: Failed while installing JAX-RS (REST Web Services) 1.1.java.lang.NullPointerException, I'm using Jersey.
Same problem when I try to import it elsewhere.
Any hints? thanks
Error log
!ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:13.572 !MESSAGE The artifact jta:jta:jar:1.0.1b has been relocated to javax.transaction:jta:jar:1.0.1B !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:13.807 !MESSAGE The artifact jta:jta:jar:1.0.1b has been relocated to javax.transaction:jta:jar:1.0.1B !ENTRY org.eclipse.wst.common.project.facet.core 4 0 2013-05-30 15:02:14.479 !MESSAGE Failed while installing JAX-RS (REST Web Services) 1.1. !STACK 0 java.lang.NullPointerException at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.getLastModificationTimeOfDDFile(AbstractMergedModelProvider.java:235) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.hasToReloadModel(AbstractMergedModelProvider.java:229) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.loadProviders(AbstractMergedModelProvider.java:256) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.access$2(AbstractMergedModelProvider.java:255) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider$LoadModelsWorkspaceRunnable.run(AbstractMergedModelProvider.java:278) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.loadModel(AbstractMergedModelProvider.java:249) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.getMergedModel(AbstractMergedModelProvider.java:219) at org.eclipse.jst.jee.model.internal.common.AbstractMergedModelProvider.getModelObject(AbstractMergedModelProvider.java:139) at org.eclipse.jst.ws.jaxrs.core.internal.project.facet.JAXRSUtils.getModelProvider(JAXRSUtils.java:84) at org.eclipse.jst.ws.jaxrs.core.internal.project.facet.JAXRSFacetInstallDelegate.execute(JAXRSFacetInstallDelegate.java:97) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.callDelegate(FacetedProject.java:1477) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:441) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChangesInternal(FacetedProject.java:1181) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:1117) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$1.run(FacetedProject.java:324) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modify(FacetedProject.java:339) at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.installProjectFacet(FacetedProject.java:255) at org.eclipse.m2e.wtp.jaxrs.internal.configurators.JaxRsProjectConfigurator.installJaxRsFacet(JaxRsProjectConfigurator.java:124) at org.eclipse.m2e.wtp.jaxrs.internal.configurators.JaxRsProjectConfigurator.configureInternal(JaxRsProjectConfigurator.java:101) at org.eclipse.m2e.wtp.jaxrs.internal.configurators.JaxRsProjectConfigurator.configure(JaxRsProjectConfigurator.java:73) at org.eclipse.m2e.core.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:109) at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:413) at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:350) at org.eclipse.m2e.core.ui.internal.UpdateMavenProjectJob.runInWorkspace(UpdateMavenProjectJob.java:74) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:14.969 !MESSAGE The artifact jta:jta:jar:1.0.1b has been relocated to javax.transaction:jta:jar:1.0.1B !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:15.215 !MESSAGE The artifact jta:jta:jar:1.0.1b has been relocated to javax.transaction:jta:jar:1.0.1B !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:15.389 !MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:15.397 !MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent! !ENTRY org.eclipse.m2e.logback.appender 2 0 2013-05-30 15:02:15.419 !MESSAGE Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!