well invalid characters depends on where you have them.. anything should work inside of those because they are comments -.-.. although a letter in a number box.. might not crash the game.. just teh game wont read it.. or set it to zero
I like them better.. http://www.swgbex.com/TR/gallary/images/trpic3.jpg DIdint link to it as a pic.. because its too big.. but .. i just like its got more detail than the EAW ones.. but im going to fix that with different custom particles later on..
I can help you guys out.. Gotta get mikes site again. His site has lots of information that can help you find what to hex edit to change some values.. or you can wait for his particle editor