[xwiki-devs] Errors Building xwiki-commons

I am unable to build xwiki-commons from the command line. First, I had to skip tests, and then, after I tweaked my setup to get back to Java 6 (I typically use Java 7), Maven debug output includes the text pasted below. The empty "bad path element" of "" has me baffled, but I'm ignoring that for the moment. Meanwhile, can anyone explain the problem with AetherExtensionRepository? [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project xwiki-commons-extension-repository-maven: Compilation failure: Compilation failure: [ERROR] bad path element "": no such file or directory [ERROR] S:\xwiki-commons\xwiki-commons-core\xwiki-commons-extension\xwiki-commons-ex tension-repositories\xwiki-commons-extension-repository-maven\src\main\java\ org\xwiki\extension\repository\aether\internal\AetherExtensionRepository.jav a:[107,22] cannot find symbol [ERROR] symbol : class AetherExtensionRepositoryFactory [ERROR] location: class org.xwiki.extension.repository.aether.internal.AetherExtensionRepository [ERROR] S:\xwiki-commons\xwiki-commons-core\xwiki-commons-extension\xwiki-commons-ex tension-repositories\xwiki-commons-extension-repository-maven\src\main\java\ org\xwiki\extension\repository\aether\internal\AetherExtensionRepository.jav a:[110,8] cannot find symbol [ERROR] symbol : class AetherExtensionRepositoryFactory [ERROR] location: class org.xwiki.extension.repository.aether.internal.AetherExtensionRepository [ERROR] [ERROR] S:\xwiki-commons\xwiki-commons-core\xwiki-commons-extension\xwiki-commons-ex tension-repositories\xwiki-commons-extension-repository-maven\src\main\java\ org\xwiki\extension\repository\aether\internal\AetherExtensionRepository.jav a:[107,22] cannot find symbol [ERROR] symbol : class AetherExtensionRepositoryFactory [ERROR] location: class org.xwiki.extension.repository.aether.internal.AetherExtensionRepository [ERROR] S:\xwiki-commons\xwiki-commons-core\xwiki-commons-extension\xwiki-commons-ex tension-repositories\xwiki-commons-extension-repository-maven\src\main\java\ org\xwiki\extension\repository\aether\internal\AetherExtensionRepository.jav a:[110,8] cannot find symbol [ERROR] symbol : class AetherExtensionRepositoryFactory [ERROR] location: class org.xwiki.extension.repository.aether.internal.AetherExtensionRepository --Gary