[1.7.10] launchwrapper-1.9.jar no source attatchment

[EmperorZelos]

I worked on some custom classes to give myself tools to work with but I have been getting this message for some peculiar reason, what could cause this? How would I solve it?

[shieldbug1]

I don think the launch wrapper automatically applies the source, but you can easily add it to the build path. It's where the launch wrapper itself is saved on your computer.