I’m getting an exception “The method or operation is not implemented” creating a Presentation instance from either of the PPTX files attached to this post.
Ideally I’de like to find a way to load this presentation as it is, but if that’s not possible on a short-term, I would appreciate some help in identifying what element is not supported, so I could change or remove it.
I am able to reproduce your mentioned issue using both the files. Following issues are registered in our issue tracking system for further investigation from our development team.
SLIDESNET-35514: Exception “The method or operation is not implemented” while opening the file "EvilSlide_1.pptx" SLIDESNET-35515: Exception “The method or operation is not implemented” while opening the file "EvilSlide_2.pptx"
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