PinballY system tables folder not found
What it means
A PinballY system looks for its tables in a folder that does not exist on this PC.
Why it happens
The system's « Table folder » setting points to a folder that is no longer there: it may have been moved, renamed or deleted after the setting was written. The scan cannot tell which of these cases is yours.
How Pincab Toolbox detects it
The scan reads PinballY's Settings.txt. For each enabled system, it works out the tables folder: the full path as written (the [PinballY] variable is replaced by PinballY's folder), or a path relative to the folder of the system's program when that program is there. It checks that this folder exists. It says nothing when the folder cannot be known without guessing (another variable, missing program, drive not on this PC). Nothing is changed.
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.