Incompatible units Error

[dboulet]

I’ve been getting the following error since upgrading to CodeKit version 2.3.7, which includes libsass 3.2.1:

Error: Incompatible units: 'em' and 'px*em/px'.

Here is the relevant SCSS, the last line is the one producing the error:

$base-font-size: 14px;
$column-width: 92px;
$content-max-width: ((($column-width * 12) / $base-font-size) * 1em) + 22em; 

Worked fine in previous versions of libsass, and produces no error in Ruby Sass.