Butter is a system usability tool.
the modern versions are not compatible with DOS and will not run on windows 8, 7, Vista, XP, 98/95, windows ME
if you find a bug, Please report it in the issues tab. if you want a feature, you can either send it to my email OR use issues.
if you download canary, you may find some errors because I just finished making them. your feedback will be listened more closely.