When I try to select all of the data in my InStat data table, I get the error message "List index out of bounds," and the program crashes.

This is a bug in the Windows version of InStat 3 (not the Mac version). If you click on the area to the right of the last column ("Group Z") in the data table, the program freezes.

There is no need to click out there. If you need to select all of your data (to paste to another program), you can do so with one click: