I have a dataset of 324 analyses. Each analysis shows concentrations of 11 elements. When I try to do cluster analysis, whether it is the whole dataset, any subset, or a dummy dataset I create, I get an error message stating "An error has occurred with the analysis. Please make sure that your dataset meets the requirements specified in the help file." The data is quantitative, and I select that under data type. It is a continuous (no blanks or text) datset. I am running office 2003. Any suggestions?