What does "Malformed command links" mean?

    This is a bug in 4.035.  While in general it's merely a cosmetic
    problem, it often comanifests with a highly undesirable coredumping
    problem.  Programs known to be affected by the fatal coredump include
    plum and pcops.  Since perl5 is pretty much a total rewrite, we can
    count on it being fixed then, but if anyone tracks down the coredump
    problem before then, a significant portion of the Perl world would
    rejoice.