Cactushop Category Display Error

One of my clients was getting an error on his live website which is running on Cactushop. The error was on the category display page and the error said "Operation is not allowed when the object is open" This was obviously an issue that had to do with opening a recordset when it is already open so the fix was easy once you can figure out which line is calling which function that is opening the recordset. There is a function named ExecuteRS which opens a new recordset. I checked the page which was mentioned as the page showing error as 404.asp ...