Hi,
It works fine in Windows 7. I suspect that you have not downloaded and installed the SDK. See documentation and link next to plugin on the MACH plugin page.
Lee
Has anyone have the xbox controller working with W7? I get messages saying "Plugin Dll defective. Reload" and "defective plugin found....ignoring" After Mach opened, plugin control only shows video window. I have the most current plugin off the web site.