M1, M1 LE, MDE-X, MS-20, Monopoly, or Polysix validation fails, or the plug-in closes immediately. How can I fix this?

The AU (Audio Unit), VST3, and AAX versions of these KORG Collection plug-ins require that the VST 2.0 version be installed:

• M1
• M1 LE
• MDE-X
• MS-20
• Monopoly
• Polysix
• Wavestation

If the VST 2.0 version isn't in the expected location–for example, if you've removed it manually–the plug-in will not validate or launch properly. To solve this, reinstall the plug-in.