VPMAlias loop
What it means
A table that needs this ROM name may refuse to start or load the wrong ROM.
Why it happens
An alias in VPMAlias.txt is supposed to point to a real ROM set name, but this chain of aliases loops back to itself instead.
How Pincab Toolbox detects it
Following this alias chain in VPMAlias.txt leads back to its own starting point.
Automatic repair
Repair, included in the Pincab Toolbox licence, can fix this one for you. Your files are backed up first, and the fix can be undone.
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).