Ran into a problem when I updated - feels like it might be the itch client's fault but who knows - it kept kicking me out saying I needed to update still. In the folder, instead of installing the new build to the existing install folder ("/petal-crash-online/"), it installed to a subfolder within that folder called "/Petal Crash Online/". Renaming the install folder before updating might prevent the issue, or it might break things further, I don't know. But copying from the new folder to the actual install folder fixes the issue, in case anyone else also had this happen.