problems with links for participants: they do not work
I have installed Jatos (Windows) to send a study that I programmed in Opensesame to some paticipants.
I have some questions, firs one: do participants need to have java or jatos installed on their laptop? Do the versions in this case need to match with mine? Because without java/jatos the link I send to them seems not to work at all (the page can't be loaded).
Second, the participnts who have jatos installed received the message "a problem occurred: a study with ID (num) doesn't exist" both with Personal Multiple Worker and General Multiple Worker links. Why is that?
Thank you in advance for your help, very much appreciated!