It seems that you are using the old sample data XLS. To obtain the new one, go to the "XLS Import" page in your SchoolTool and click on the "sample_data.xls" link.
Thank you for your bug report. We'll implement more user-friendly handling of this error for the next SchoolTool bugfix release.
It seems that you are using the old sample data XLS. To obtain the new one, go to the "XLS Import" page in your SchoolTool and click on the "sample_data.xls" link.
Thank you for your bug report. We'll implement more user-friendly handling of this error for the next SchoolTool bugfix release.