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We are using an experiment that contains several questionnaires and recently changed the variable names on 2 of the questionnaires. I made new experiments after I changed the questionnaires, but now the data file is showing all 00's for those 2 questionnaires that were changed. All of our previous data didn't show up with zeros (it was all practice/test runs) so I'm not sure why this is happening or how to fix it.
Thanks!
Try backing up and then deleting the data folder so MediaLab can create a fresh data folder and fresh data files with the updated structure. It will do so if you run a trial session after deleting the old data folder. Then, take a look at the new data files (i.e., after the trial run) and see if the new files are more like what you would expect. If not, let me know and I'd be happy to look over the files for you.