I have some problem with the "When I receive message" block in my scratch project. Sometimes the block worked just fine but other times when the corresponding message was broadcast, after receive the message, only the first one or two following moves were activated. In other words, when receiving the message, the script gets stuck in the middle. But when I went through the receiving script individually, I found it ran smoothly. So could someone help me with it? The problematic blocks are with the sprites named "heart","words" and "boy"and "girl" in the last scene. Here is the address in scratch: http://scratch.mit.edu/projects/47738788/.