Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
how do i fix this?
You always launch the games through plutonium.exe and not from the launcher from %localappdata%/Plutonium/bin. If you're launching it from pluto.exe and still getting the error, delete %localappdata%/Plutonium and run the launcher again.