Tomek, et. all, I found the cause. I suspect that your root gradle directory is named "gradle-core". This exposes a bug in Gradle where it tells Ivy that the root project is named "gradle-core", which conflicts with the name of the subproject called "gradle-core". I renamed my directory to gradlecore and the problem went away. This bug will be fixed, but that should get you building until then.
-- John Murph Automated Logic Research Team
