replace @include ctb-opacity(100) with @include ctb-opacity(1) as seen in https://github.com/vwall/compass-twitter-bootstrap/commit/b80ea1bc20f031a4abad7906ba14590bccadc74e search for (e( and fix it search for &- and fix it, see #101 search for .navbar-fixed-bottom .container { and fix it readd the imports into _buttons.scss as seen in https://github.com/vwall/compass-twitter-bootstrap/commit/18d2d061235d5477c3a30beab9f02c7e9387f0c4 add utility classes defined in mixins.scss to stylesheets/_compass_twitter_bootstrap*.scss (right after importing mixins) @remark: if some Ruby-genius wants to automate this feel free TWITTER BOOTSTRAP Bootstrap is Twitter's toolkit for kickstarting CSS for websites, apps, and more. It includes base CSS styles for typography, forms, buttons, tables, grids, navigation, alerts, and more. To get started -- checkout http://getbootstrap.com! AUTHORS