We use the "parallels" program to run MediaLab in Mac (this program just give a Windows interface for easier access by users). After we entered the subject ID and condition number when "select and runn an experiment," a message will pop up saying that "unable to access or create data folders; if your data folders in the CD rom please change that in Preferences." The problem is that we set the default data files as "default.mlp" and we are not sure why this is still happening. It will be greatly appreciated if you can reply us soon so that we can resume our experiment.