With the latest I build [1] and the latest Photon JEE build [2], I don't get that error anymore. I get a different one, however.
Cannot complete the install because one or more required items could not be found.
Software being installed: Dali Java Persistence Tools - EclipseLink JAXB Support 1.4.200.v201803012229 (org.eclipse.jpt.jaxb.eclipselink.feature.feature.group 1.4.200.v201803012229)
Missing requirement: EclipseLink MOXy 2.6.0.v20140809-296a69f (org.eclipse.persistence.moxy 2.6.0.v20140809-296a69f) requires 'java.package; com.sun.xml.bind 0.0.0' but it could not be found
Cannot satisfy dependency:
From: Dali Java Persistence Tools - EclipseLink JAXB Support 1.4.200.v201803012229 (org.eclipse.jpt.jaxb.eclipselink.feature.feature.group 1.4.200.v201803012229)
To: org.eclipse.equinox.p2.iu; org.eclipse.persistence.moxy [2.6.0.v20140809-296a69f,2.6.0.v20140809-296a69f]
I'll figure out where com.sun.xml.bind is supposed to come from and add it to the site.
Now that all the individual projects' update sites have all the sources/features/tests in them, we can clean up the aggregate sites to only show what we want to show to users, and keep the rest hidden or omitted.
Stay tuned - fixes ahead.