This is not a Hyperspin error; it's a Windows 10/11 error. The 1.5.1 executable requires this older OCX file.
The "Upgrade Files Only" installation is essentially a "drag and drop" operation.
Select and Drag: Select all the files inside the upgrade archive.
Verify the Version:
Cause: The Plugins/HyperSpin.plugin is mismatched with your RocketLauncher version.
Fix: Download the latest RocketLauncher Plugin Pack (official RL site). Extract only the HyperSpin.dll and .plugin files into your Hyperspin/Plugins/ folder. Overwrite the ones from the 1.5.1 upgrade.
For the purist who builds cabinets with 4K displays or 64-bit Windows 11 environments: Yes.
The HyperSpin 151 upgrade files only install is the perfect surgical strike. It leaves your 500GB media collection intact, preserves your custom genre wheels, and simply replaces the engine block. hyperspin 151 upgrade files only install
You will gain:
You will lose:
Cause: 1.5.1 handles PNG alpha channels more aggressively than 1.4.
Fix: In Settings/Settings.ini, under [Main], add WheelRender=0. This reverts wheel rendering to the legacy 1.4 method without sacrificing 1.5.1 stability. This is not a Hyperspin error; it's a Windows 10/11 error
Before we dig into the installation, let’s address why the "files only" approach matters.
The upgrade from 1.4 to 1.5.1 changes how XML databases are read, but it doesn't require wiping them. A "files only" install keeps your custom genre lists and game histories intact.