When I choose for the stamp collector, it always gives me about 10 lines of: System.FormatException: Input string was not in a correct format. at.System.Number.StringToNumber(String str. NumberStyles options. NumberBuffer& number. NumberFormatInfo info.Boolean parseDecimal) at System.Number.ParseInt32(Strin
After this, however, it can buy stamps correctly again and everything is fine. Is there something I'm doing wrong for it to be like this?