Don't worry y'all, the problem has already been fixed for the future. It's actually interesting. It's both significantly easier AND harder to have 'custom sprites' in SMBX compared to SMW. It is a lot harder to have sprites that can do completely new things, to have sprites that do things that the engin never meant for. However, anything a sprite can normaly do, such as relative vinceability, speed, hoping distance, etc, can all be altered simply with a .txt file with a bunch of variables in it. The thing is the program also accepts decimals, however when my computer is on a french format the decimal system is 'different' and the computer doesn't understand... though putting that one variable in english fixes everything, even though the rest of my computer is still fully french, with my french-canadian keyboard settings and everything. The weirdest thing! Anywho, this is starting to feel more and more like an 'american vip' and I really like that starpost dealio, it's a really nice and non-intrusive touch.