that depends.
where are you clicking the GE link? i believe that the main KML (all categories) on the home page (?) works.
i know my KML (on my page) and foot print work.
i believe that the KML for individual categories is broken.--it cant be that the 'file is too large', then the main KML (or mine) wouldnt work.
i dont save it, i open it to my places, then save it when exiting GE.