Hi Dan,
I can assure you that I had no problems with the java applets after upgrading to Yosemite. Are you seure that the right http address is in your Java preferences? Any misspelled character would originate the message. I remember I had to upgrade Java after I installed Yosemite. Maybe this is the problem.
Greetings
Frederic
El dimecres 5 de novembre de 2014 19:11:31 UTC+1, Dan Moore va escriure: