Note that you made your preset for Bigorra with H. G. Muller's Game-Code Generator, and it includes his alternative movepiece.js file. You should remove this from your preset and from any other preset that includes it, because it was designed for his earlier and unrelated system for navigating through past moves, which is not working because of some conflicts with how Game Courier currently works, and it replaces functions from my more up-to-date movepiece.js script.
Note that you made your preset for Bigorra with H. G. Muller's Game-Code Generator, and it includes his alternative movepiece.js file. You should remove this from your preset and from any other preset that includes it, because it was designed for his earlier and unrelated system for navigating through past moves, which is not working because of some conflicts with how Game Courier currently works, and it replaces functions from my more up-to-date movepiece.js script.