Instalad la versión de Desarrollador del Java que encontraréis aquí:
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
The solution for Yosemite problems wiht Wuala: Install the Developers version of JAVA 8. Works smoothly!!!
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
SI ERES USUARIO DE MICROSOFT OFFICE; CUIDADO, hay que volver a JAVA 6
http://support.apple.com/kb/DL1572?viewlocale=en_US&locale=en_US
If you are a Miscrosoft Office user, careful!!, back to JAVA 6:
http://support.apple.com/kb/DL1572?viewlocale=en_US&locale=en_US