I wish to embed a PDF into an Excel spreadsheet for sharing and commenting. I am able to do this just fine, and I am able to add comments to the embedded PDF. However as soon as I add a stamp to the PDF, it no longer allows the file to be saved and tells me that "The document could not be saved. Cannot write to this file. Please save the document with a different name or in a different folder." Does anyone know why this happens, or what, if any, fix there is
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