I am seeing this stack trace.
!MESSAGE An internal error occurred during: "Generating Entities".
!STACK 0
java.lang.NullPointerException
at
org.eclipse.jpt.db.internal.DTPForeignKeyWrapper.getReferencedTable(Unknown
Source)
at
org.eclipse.jpt.db.internal.DTPForeignKeyWrapper.getReferencedTable(Unknown
Source)
at org.eclipse.jpt.gen.internal.GenTable.addReferencedTablesTo(Unknown
Source)
at org.eclipse.jpt.gen.internal.GenScope.buildReferencedTables(Unknown
Source)
at
org.eclipse.jpt.gen.internal.GenScope.configureManyToManyRelations(Unknown
Source)
at org.eclipse.jpt.gen.internal.GenScope.initialize(Unknown Source)
at org.eclipse.jpt.gen.internal.GenScope.<init>(Unknown Source)
at org.eclipse.jpt.gen.internal.PackageGenerator.<init>(Unknown Source)
at org.eclipse.jpt.gen.internal.PackageGenerator.generateEntities(Unknown
Source)
at
org.eclipse.jpt.ui.internal.platform.base.EntitiesGenerator$GenerateEntitiesRunnable.runInWorkspace(Unknown
Source)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(Unknown
Source)
at org.eclipse.core.internal.jobs.Worker.run(Unknown Source)