I know I'm probably missing some very easy step, but I have an experiment folder containing an experiment file, which contains a questionnaire and a responses.xls file (97-2003 version of Excel). Variables in responses.xls file match those in the .que file in the experiment. The additional variable in responses.xls contains a simple SUM formula. When I run through the experiment, data do not appear in the responses.xls or in any "reports" folder within the data folder. What am I missing? Thanks.