Empty (0-byte) file
What it means
This file is empty: the table, backglass or ROM it should hold cannot work.
Why it happens
A 0-byte file holds nothing to load. An interrupted download or copy, or a disk that filled up during a write, can leave one behind.
How Pincab Toolbox detects it
The file size on disk is 0 bytes (read without opening the file). Checked: .vpx tables, .directb2s files in table folders, .zip files in VPinMAME's roms folder and in « pinmame\roms » next to a table. A file still in the cloud (OneDrive) is left out.
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. Not covered: Future Pinball, Pinball FX, Visual Pinball 9 and the other frontends (PinballX, PinballY).