NoClassDefFoundError o.a.maven.project.MavenProject

Someone else summed up the stack trace here:

See http://mail-archives.apache.org/mod_mbox/maven-users/201410.mbox/%3CCAPCjjnHsMu_+3JPt6W+bokE57AGLa=rd1W1DDam3CcM8yeoowA@mail.gmail.com%3E

Now I looked at:

https://github.com/spring-projects/spring-ide/blob/master/plugins/org.springframework.ide.eclipse.maven/META-INF/MANIFEST.MF

and I see "org.apache.maven.project;resolution:=optional" ...

I guess it is optional due to the dynamic / replacable Maven runtimes, however all Spring code that uses it should check it is currently in a resolved with the OSGi container, before using code path that rely on it to exist.

I also do not see in the MANIFEST.MF

Require-Bundle: org.eclipse.m2e.maven.runtime

As if I look at eclipse-jee-luna-SR1-win32-x86_64/plugins/org.eclipse.m2e.maven.runtime_1.6.0.20141015-1550/META-INF/MANIFEST.MF I see it is provided here and this m2e plugin comes with all m2e installs to provided the mandatory embeded implementation.