Why does this box appear every time I go to fritzing

thanks guys.
I tried to find the file LCM1602 part.fzp and only found three files with an svg suffix so I deleted the 1602 item and tried to reload it from here
http://fritzing.org/media/fritzing-repo/projects/i/iot-dht22-lcd-i2c-arduino-uno-and-ethernet-shield/fritzing/
I got a box saying this item (or at least the long row of numbers and letters referring to this item) were already in fritzing so I did a search of the parts and found another 1602. I don't know where it came from (is/was) but I dragged it to mine which either copied or moved it there.
I shut the fritzing programme and restarted and the box has gone. solved. thanks for the pointers.