You may encounter an UnsatisfiedLink error while running your application with UnArchiverRar if it uses other libraries with .so files.
This error is raised when a .so file is not found for a given CPU architecture. For example, you may have a library that supports mips64 while UnArchiverRar.jar does not embed the .so file specific to that architecture.
To fix this, you have to add the appropriate native library of this add-on in the /lib directory of UnArchiverRar.jar.