After starting Excel with the growth reference spreadsheets in the startup path, when you close Excel it prompts the user to save the spreadsheets despite no changes having been made.
I think this is because the growth references are saved in an older version of Excel and newer versions of Excel update the spreadsheet.
Possible solution is to update the growth reference spreadsheets that are packaged with the add-in for 64-bit versions.
For issue #1
After starting Excel with the growth reference spreadsheets in the startup path, when you close Excel it prompts the user to save the spreadsheets despite no changes having been made.
I think this is because the growth references are saved in an older version of Excel and newer versions of Excel update the spreadsheet.
Possible solution is to update the growth reference spreadsheets that are packaged with the add-in for 64-bit versions.