build fails with missing jar file

I just updated Android Studio (Mac) from version 2.0 to 2.1.1 and the latest build tools (23.0.3) and Gradle (2.10). Now when I try building my project, it fails with this error in the Gradle console:

I purchased a source code license for RadaeePDF, so I have the source Java files for pdfex and the rest in my project, but I never had a Radaee jar file in my project. This always worked fine until something changed in Android Studio or Gradle. Do I need to add these jar files, and if so, where can I get them? Or do I need to change something in my project settings to make it work like it did before?

I just found that my build configuration file included

even though I never had that jar file in my project. I removed that line and now my app builds again. Something must have changed that makes those dependencies required now. Is there a benefit to adding this jar file to my project versus continuing to work without it as I have been doing?

Hi,
this old jar file contains the source code, so if you have the source code you have to delete this jar file.

I suggest you to update your old library to the latest version, there are a lot of improvements and new implementations..