java.lang.IllegalArgumentException: file:/Users/jlane/src/core/vendor/plugins/find_by_to_param/lib is not a valid classpath entry; it must end with a slash.
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.verify(SimplePathResourceImplementation.java:97)
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.verify(SimplePathResourceImplementation.java:65)
   at org.netbeans.modules.java.classpath.SimplePathResourceImplementation.<init>(SimplePathResourceImplementation.java:108)
   at org.netbeans.spi.java.classpath.support.ClassPathSupport.createResource(ClassPathSupport.java:78)
   at org.netbeans.modules.ruby.railsprojects.classpath.BootClassPathImplementation.getResources(BootClassPathImplementation.java:171)
   at org.netbeans.api.java.classpath.ClassPath.entries(ClassPath.java:311)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.createResources(PathRegistry.java:592)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.getPathIdToRoots(PathRegistry.java:537)
   at org.netbeans.modules.parsing.impl.indexing.PathRegistry.getRootsMarkedAs(PathRegistry.java:406)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport.getClasspathRoots(QuerySupport.java:408)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport.collectClasspathRoots(QuerySupport.java:367)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport.findRoots(QuerySupport.java:193)
   at org.netbeans.modules.jumpto.file.FileSearchAction$Worker.getFileNames(FileSearchAction.java:438)
   at org.netbeans.modules.jumpto.file.FileSearchAction$Worker.run(FileSearchAction.java:384)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1957)