VBScript File error message

I installed the instant restore point VBScript file you recommended; however, when I tried to create a set point, I received the following Windows Script Host message:
Script: InstantRestorePoint.vbs
Line: 1
Char: 63
Error: Expected end of statement
Code: 800A0401
Source: Microsoft VBScript compilation error
What mistake did I make and how do I avoid a repeat performance?