file is being assigned a //# sourceMappingURL but already has one
It's a warning (not an error)and it is a bug (https://bugzilla.mozilla.org/show_bug.cgi?id=1020846 fixed in FF 33)
This warning/error also applies to other libs (angular, backbone, etc.)
I have been working on a project for over a year now, I have never seen this message until roughly the last Firefox update.
I received it using jQuery 1.9.x, so I just updated my jQuery to 1.11.x and the error went away. I am now happy.
So, if you are using jQuery and see this Error/Warning, try updating your jQuery to the latest version.
Hope this helps someone.
In Firefox 27.0.1 I was getting this exact same error. I already have jQuery 1.11.0.
SyntaxError: Using //@ to indicate sourceMappingURL pragmas is deprecated.Use //# instead kendo.dataviz.min.js:2522:09:26.635 Error: http://localhost/project/Scripts/kendo.dataviz.min.js is being assigned a //# sourceMappingURL, but already has oneI opened the kendo.dataviz.min.js and deleted the offending line:
//@ sourceMappingURL=kendo.dataviz.min.js.map