I'm working on a Deathrun map and I'm trying to add an env_spritetrail to give players a trail. I've looked at how other mappers have done it and copied their method. I've created a basic sprite to use and I've checked everything. Yet, when I try test it in my map, the whole game crashes. I get no warnings, compile errors or anything. It just dies. I've also tried parenting a env_spritetrail to a rotating door, to check if its the parenting process that messing things up which I believe is probably the case as the env_spritetrail starts unparented to anything. Can anyone help me figure out why it does this?