Is it a standard morph injection pose? Is this a different version of M4 than you've used before with the injection? Was it a different version of Poser, when you last tried? Is your library setup different? Are Poser's PMD use settings different than before? Maybe the M4 version you're using now lacks the blank morph injection slots the old pose requires? If the injection pose uses PMDs, perhaps the library paths are broken somehow?

Just throwing guesses out there. I have no idea which of these (if any) may be valid, with Poser 11....

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.