I have already searched the entire forum and found nothing that solved my problem.
Whenever I create a new project through Eclipse, it has an error in the library android.support.v7.app.ActionBarActivity, inside the main class. The strange thing is that this error only happens in new projects. In old projects that have already been created, this library works fine.
Below is my console:
[2014-12-20 12:14:30 - Taskk] Project has no project.properties file! Edit the project properties to set one.
[2014-12-20 12:14:56 - Taskk] Project has no project.properties file! Edit the project properties to set one.
[2014-12-20 12:15:14 - Contactos] Unable to resolve target 'android-8'
[2014-12-20 12:21:37 - Beer] Found 2 versions of android-support-v4.jar in the dependency list,
[2014-12-20 12:21:37 - Beer] but not all the versions are identical (check is based on SHA-1 only at this time).
[2014-12-20 12:21:37 - Beer] All versions of the libraries must be the same at this time.
[2014-12-20 12:21:37 - Beer] Versions found are:
[2014-12-20 12:21:37 - Beer] Path: C:\Users\PC\Documents\Estudy\appcompat_v7\libs\android-support-v4.jar
[2014-12-20 12:21:37 - Beer] Length: 758727
[2014-12-20 12:21:37 - Beer] SHA-1: efec67655f6db90757faa37201efcee2a9ec3507
[2014-12-20 12:21:37 - Beer] Path: C:\Users\PC\Documents\Estudy\Project1\libs\android-support-v4.jar
[2014-12-20 12:21:37 - Beer] Length: 995624
[2014-12-20 12:21:37 - Beer] SHA-1: 3e4e879d0b3dc11f2feb3f55e77e3b5bd82c4a28
[2014-12-20 12:21:37 - Beer] Jar mismatch! Fix your dependencie
I've spent days trying to figure out why.