For those who may have used or want to use my G/T spreadsheet tool I have released an improved version 1.12. This is not a bug fix.
An updated version of the spreadsheet GT.xlsm is at https://github.com/owenduffy/xl.
If Microsoft has frightened you off using spreadsheets with macros, you could use this with macros disabled, it just stops the green sort button working, all the cells still calculate properly.