PowerPoint doesn't work in player

Xibo Player: 2 R254.1 (Windows)

I load a layout with a “PowerPoint” into the player and get the error message that a file is missing in the Xibo Library.
The file is a * .HTM that does not exist.
When I checked the Xibo Library, I found that all files were copied correctly. Apparently the player is calling a completely wrong file ?! What can you do there?

I just noticed that I only have this problem with PowerPoint.

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