PuP-Pack expected by the table is missing
What it means
This table's script is set to use a PuP-Pack that is not installed.
Why it happens
The script gives PinUP Player the name of a PuP-Pack, which is a folder of PUPVideos. No such folder is in the table's package or in PUPVideos, so this table's PuP videos and screens will not show.
How Pincab Toolbox detects it
The script creates PinUP Player and gives it exactly one PuP-Pack name, the switches around that creation read as on, PinUP Popper's PUPVideos folder exists, and neither the package (a folder of that name holding triggers.pup or playlists.pup) nor PUPVideos (a non-empty folder of that name) has the pack.
Check your own pincab
Pincab Toolbox is a free Windows scanner for Visual Pinball X and PinUP Popper. It finds and explains problems like this one. No account, no telemetry.
Download for freeCovered: Visual Pinball X (10.x) and PinUP Popper. Partly covered, read only: PinballX and PinballY (their settings and game lists). Not covered: Future Pinball, Pinball FX, Visual Pinball 9 and the other frontends.