Those blocks work when you download them! But first you have to save the whole project and then you have to export Sprite1. If you want, move the sprites of the stage to Sprite1, too. If you don´t save the project or change language before saving, the blocks will become obsolete. If you want that those blocks appear in your side bar, download this .image file and replace scratch.image (in your scratch ordner (C:/Program Files/Scratch/scratch.image)) with it: http://www.datafilehost.com/download-f5c39e28.html If you want the code for those scripts (but you don´t need them because if you download my .image file you have them): http://scratch.mit.edu/forums/viewtopic.php?id=58790&p=1 Some credits to YourLocalBlockLib.