I am going to use “library” in “SHER” application. So I made “library” “is library” and used it in “SHER” app. by adding library:

When I look back, it is red crossed:

I am using the ABS. I had imported all the applications from the downloaded “ABS”. Please help me
this means that the project cannot be found and there for you are referencing nothing.
you should remove the broken reference and import it again from the correct location
it can also mean that you removed the project referenced from your environment and you should either re-open the project or import it back to eclipse.