Hi,
Someone already had this issue and was suggested to remove org.sonatype.m2e.temporary.mojos. I have checked my installation details and I didn't find this connector. Do you have an idea of what can cause this issue (I have it on all my "jar" projects) :
Conflicting lifecycle mapping (plugin execution "org.apache.maven.plugins:maven-jar-plugin:2.3.1:jar (execution: default-jar, phase: package)"). To enable full functionality, remove the conflicting mapping and run Maven->Update Project Configuration.
Here is an extract from my Eclipse configuration with all m2e related plugins/features.
eclipse.buildId=I20110603-0909
[...]
***
Features:
[...]
org.eclipse.m2e.feature (1.0.0.201106052308) "Maven Integration for Eclipse"
org.eclipse.m2e.logback.feature (1.0.0.201106052308) "m2e logback configuration"
[...]
org.maven.ide.eclipse.wtp.feature (0.13.0.201106152022) "Maven Integration for Eclipse WTP"
[...]
org.sonatype.m2e.subversive.feature (0.13.0.201106022210) "Maven SCM Handler for Subversive"
*** Plug-in Registry:
[...]
org.eclipse.m2e.archetype.common (1.0.0.201106052308) "Maven Archetype Common Bundle" [Resolved]
org.eclipse.m2e.core (1.0.0.201106052308) "Maven Integration for Eclipse" [Active]
org.eclipse.m2e.core.ui (1.0.0.201106052308) "Maven Integration for Eclipse" [Active]
org.eclipse.m2e.discovery (1.0.0.201106052308) "m2e Marketplace" [Starting]
org.eclipse.m2e.editor (1.0.0.201106052308) "Maven Integration for Eclipse (Editors)" [Active]
org.eclipse.m2e.editor.xml (1.0.0.201106052308) "Maven
POM XML Editor" [Active]
org.eclipse.m2e.jdt (1.0.0.201106052308) "Maven Integration for Eclipse JDT" [Active]
org.eclipse.m2e.launching (1.0.0.201106052308) "Maven Integration for Eclipse Launching" [Active]
org.eclipse.m2e.lifecyclemapping.defaults (1.0.0.201106052308) "Default Build Lifecycle Mapping Metadata" [Resolved]
org.eclipse.m2e.logback.appender (1.0.0.201106052308) "Bundle-Name" [Resolved]
org.eclipse.m2e.logback.configuration (1.0.0.201106052308) "m2e logback configuration" [Active]
org.eclipse.m2e.maven.indexer (1.0.0.201106052308) "Maven / Nexus Indexer Bundle" [Resolved]
org.eclipse.m2e.maven.runtime (1.0.1.201106031148) "Embedded Maven Runtime Bundle" [Resolved]
org.eclipse.m2e.model.edit (1.0.0.201106052308) "Maven Project Model Edit Bundle" [Starting]
org.eclipse.m2e.refactoring (1.0.0.201106052308) "Maven Integration for Eclipse Refactoring" [Active]
org.eclipse.m2e.scm (1.0.0.201106052308) "SCM Maven
Integration for Eclipse" [Resolved]
org.eclipse.m2e.usagedata (1.0.0.201106052308) "m2e / UDC integration Marketplace" [Active]
[...]
org.maven.ide.eclipse.wtp (0.13.0.201106152022) "Maven Integration for Eclipse WTP" [Active]
org.maven.ide.eclipse.wtp.overlay (0.13.0.201106152022) "Overlay support for Eclipse WTP" [Active]
[...]
org.sonatype.m2e.buildhelper (0.13.0.201106022023) "m2e connector for build-helper-maven-plugin" [Resolved]
org.sonatype.m2e.mavenarchiver.pomproperties (0.13.0.201106022023) "m2e connector for mavenarchiver pom properties" [Resolved]
org.sonatype.m2e.modello (0.13.0.201106171509) "m2e connector for modello" [Resolved]
org.sonatype.m2e.subversive (0.13.0.201106022210) "Maven SCM Handler for Subversive" [Resolved]
org.sonatype.tycho.m2e (0.5.0.201106022302) "Tycho Project Configurators" [Starting]
[...]
