tycho: missing org.eclipse.tycho.core.TychoProject

I try to run tycho in ubuntu, but I face this error. Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:0.14.1:build-qualifier (default-build-qualifier) on project tychodemo.bundle: Execution default-build-qualifier of goal org.eclipse.tycho:tycho-packaging-plugin:0.14.1:build-qualifier failed: Unable to load the mojo 'build-qualifier' in the plugin 'org.eclipse.tycho:tycho-packaging-plugin:0.14.1'. A required class is missing: org.eclipse.tycho.core.TychoProject

I guess it's related to my framework, because I do the same in another computer and tycho run succesfully.Can you detect my problem? thanks in advance!


Class loader errors for Tycho classes are typically caused by mixing multiple Tycho versions in the same reactor. Being a build build extension, there must only be one version of Tycho active at a time.

To do this, check that your reactor uses the same version for the Tycho build extension and the Tycho plug-ins, e.g. by using the variable ${tycho-version} as version and defining that version in your parent POM:


Also make sure that all your modules reference the same parent POM, and not an older version of the POM.

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