Outputting a GUID in VBScript ignores all text after it

I seem to have solved my own problem.. it was adding something extra to the text, so I had to do:

myGuid = Left(myGuid, Len(myGuid)-2)

and it now outputs fine. Strange.

I use something like this

Function GetGuid() 
        Set TypeLib = CreateObject("Scriptlet.TypeLib") 
        GetGuid = Left(CStr(TypeLib.Guid), 38) 
        Set TypeLib = Nothing 
End Function