This is a pathing issue. Open HyperHQ.exe (included in the 1.5.1 files). Go to "Wheel Settings." Ensure your "Rom Path" and "Emulator Path" use absolute paths (e.g., D:\Emulators\MAME\mame64.exe ) not relative paths.
To install the Hyperspin 151 upgrade files only, follow these steps: hyperspin 151 upgrade files only install
This files-only method keeps your custom artwork, databases, and settings intact. Always keep a full backup of your HyperSpin folder before any upgrade. This is a pathing issue
Let us proceed with the surgical upgrade. Assume you have a working HyperSpin 1.4 directory on D:\Hyperspin\ . hyperspin 151 upgrade files only install