The issue is just that you need to be running the 32-bit command-prompt to run the script.

So instead of typing just "cmd" or "cmd.exe", you need to use:

%windir%\SysWoW64\cmd.exe

Then it will work correctly.

For example:

%windir%\SysWoW64\cmd.exe
cscript "C:\Program Files (x86)\Inflectra\Rapise\Engine\SeSExecutor.js" "C:\Users\myuser\Documents\My Rapise Tests\MyTest1\MyTest1.sstest"