Pogo.com games won't load?

Never had problems with Windows ME, XP, etc., but with the Vista, I get error messages that the games won't load. Yes, I've got JAVA. Funny, but 3 days ago it let me play all day in Mahjong Garden, but, my dragon aged and I was to get a progress badge and now get nothing but error messages. Can't load Rainy Day Spider Solitare, Perfect Pair Solitare but can play Canasta!