how to debug Minification failed. Returning unminified contents

asp.net-mvc, bundling-and-minification

Solution

In case someone is still dealing with problems like this.

In the example above: (1442,26) 1442 is the line number and 26 is the character offset. HOWEVER, for this to be exact, you need remove the whole comment where this error is indicated:

 /* Minification failed. Returning unminified contents.
    (1442,26): run-time error CSS1019: Unexpected token, found ':'
    (1442,26): run-time error CSS1042: Expected function, found ':'
    (1442,26): run-time error CSS1062: Expected semicolon or closing curly-brace, found ':'
     */

Problem

I am using Asp.net MVC 4 bundler to bundle and minify my Css files. YSlow is showing this error below ``` /* Minification failed. Returning unminified contents. (1442,26): run-time error CSS1019: Unexpected token, found ':' (1442,26): run-time error CSS1042: Expected function, found ':' (1442,26): run-time error CSS1062: Expected semicolon or closing curly-brace, found ':' */ ``` This is my bundle code, ``` bundles.Add(new StyleBundle("~/Content/css").Include( "~/Content/site.css", "~/Content/fullcalendar.css", "~/Content/jquery.dropdown.css", "~/Content/jquery.tagit.css", "~/Content/tipsy.css" )); ``` Now how will i find out which css file is causing the problem ? How can i debug to find the line that is causing the problem ? site.css is the only css file that i wrote.

Original source