why these red underlines on monodevelop, any idea?

61658-monodevelopproblem.png

why these red underlines on monodevelop, any idea?

thanks for the help

.Js, like uppercase “J”? Don’t know if file extensions are case sensitive, but if it is, that’s the problem, a javascript file would be .js (lowercase).

Also, there is a difference between an answer and comment, maybe you should convert your answer into a comment (there is an option along the “edit”).