How to See the Version Number of a File
Only attempt the below if you are familiar with file extensions etc.
Change the file extension of a ValuSource analysis file from .vsp to the excel format of .xlsb.
Once you have this changed open up the file and turn on sheet tabs via excel options.
Once sheet tabs are on browse to the VSProperties Tab.
Once there, you will see in cell A2 the version number of the current file. In the screenshot below, the current file is 8.0.22
Once you know the version number you can rename the file extension to .vsp