Quería exportar mis proyectos a Android Studio pero Eclipse no se está actualizando ...

Hasta ahora heagregó una s en http a la url de la fuente de actualización, movidoADT fuera de los archivos de programa, elimina la bandera "Solo leer" en todos los archivos,actualizado el SDK y todos los nuevos componentes, pero cuando busco actualizaciones, Eclipse no encuentra nada y si instalo "Android Developer Tools" a través de "Instalar nuevo software", aparece este largo registro de errores.

¿Alguna idea o usted recomienda simplemente descargar ADT de nuevo?

An error occurred while collecting items to be installed
session context was:(profile=profile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
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