I received the error when I tried to buy https://www.the-christening-corner.com/Product/Accessory/Catholic-Bible/?ID=345 which has an ampersand in the title. The purchase went through correctly when I tried to buy https://www.the-christening-corner.com/Product/Accessory/Catholic-Bible/?ID=343. Is an ampersand one of the invalid characters. What are the others and I will remove them from the titles of each item?