-- Replace with your plugin path pluginsPath = getDir #plugins myPlugin = pluginsPath + "\yourplugin.dlo" if doesFileExist myPlugin then (windows.showProperties myPlugin) else (format "File not found: %\n" myPlugin) (launching 3ds Max, loading a plugin, rendering, etc.), I can give a more precise solution.

typically indicates that a required DLL file is missing or that the system cannot find the specified file or path when trying to load a plugin, script, or external tool (like a renderer or a helper application).