Detailed problem description
Please provide a detailed bug report! Your working environment may also be important: what were you doing when the error occured? (programming, retrieving, analysing, etc…); how many times did the error occur? (one time, several times with different types of products, etc…). State what you saw, and also state what you expected to see. Write down the error messages, especially if they have numbers in. If you can, send us a printscreen or your erroneous file!