116v Multiple Entries

[Koen G]

Why can't dozens of paleographers even identify the letters, much less the words, language, and meaning, even though it is clearly plaintext in some European language and Latin letters?  

Because it's (for a large part) not a plaintext in some European language.

If you've never transcribed medieval scripts before, you don't know how much of it is guessing from context. When that context is missing, you often can't be quite sure whether something is "c" or "t", or what the row of minims represent.

Here's from the editorial notes to "Magic in the Cloister" by Sophie Page:

The transcription of occult names in this text is more arbitrary than that of other words because it is often impossible to distinguish between a c and a t, or a u, a v, and an n, or to determine whether a superscript line over a vowel represents an omitted m or n, or to make other editorial judgments in the absence of a context for these names.