Error when saving as functional syntax

[dosumis]

Trying to convert this file to functional syntax works with Protege but not with with OWLtools CLI

https://github.com/VirtualFlyBrain/VFB_owl/blob/master/src/owl/fbbt_vfb_ind_prc_nr.owl

owltools fbbt_vfb_ind_prc_nr.owl -o -f ofn vfb.ofn => Feb 11, 2016 4:11:23 PM org.semanticweb.owlapi.util.CollectionFactory sortOptionally WARNING: Misbehaving triple comparator, leaving triples unsorted: [ ... < long list of triples> ] java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.ComparableTimSort.mergeLo(ComparableTimSort.java:740) at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:477) at java.util.ComparableTimSort.mergeCollapse(ComparableTimSort.java:402) at java.util.ComparableTimSort.sort(ComparableTimSort.java:209) at java.util.Arrays.sort(Arrays.java:1312) at java.util.Arrays.sort(Arrays.java:1506) at java.util.ArrayList.sort(ArrayList.java:1454) at java.util.Collections.sort(Collections.java:141) at org.semanticweb.owlapi.util.CollectionFactory.sortOptionally(CollectionFactory.java:111) at org.coode.owlapi.functionalrenderer.OWLObjectRenderer.writeAxioms(OWLObjectRenderer.java:342) at org.coode.owlapi.functionalrenderer.OWLObjectRenderer.visit(OWLObjectRenderer.java:265) at uk.ac.manchester.cs.owl.owlapi.OWLOntologyImpl.accept(OWLOntologyImpl.java:1516) at org.coode.owlapi.functionalrenderer.OWLFunctionalSyntaxOntologyStorer.storeOntology(OWLFunctionalSyntaxOntologyStorer.java:90) at org.semanticweb.owlapi.util.AbstractOWLOntologyStorer.store(AbstractOWLOntologyStorer.java:182) at org.semanticweb.owlapi.util.AbstractOWLOntologyStorer.storeOntology(AbstractOWLOntologyStorer.java:126) at uk.ac.manchester.cs.owl.owlapi.OWLOntologyManagerImpl.saveOntology(OWLOntologyManagerImpl.java:1001) at owltools.io.ParserWrapper.saveOWL(ParserWrapper.java:226) at owltools.cli.CommandRunner.runSingleIteration(CommandRunner.java:3062) at owltools.cli.CommandRunnerBase.run(CommandRunnerBase.java:76) at owltools.cli.CommandRunnerBase.run(CommandRunnerBase.java:68) at owltools.cli.CommandLineInterface.main(CommandLineInterface.java:12)

[dosumis]

Sorry. Need to dig out rdf xml version for you to test. Will post a compressed one as this is large.