Eclipse, Maven and Classpath Errors

I’ve been working on some J2EE projects in Eclipse, where, at some point, Eclipse would spit out the following error, without even telling me where that error is coming from:

Invalid classpath publish/export dependency /my-dependecy. Project entries not supported.

It took a while, and I’ve found that in those projects—for some reason—Eclipse has added an entry to the classpath:

<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
    <attribute name="maven.pomderived" value="true"/>
    <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>

This is mostly fine, except for this line:

<attribute name=“org.eclipse.jst.component.dependency” value="/WEB-INF/lib"/>

Removing it doesn’t seem to break anything else, and removes the error.