Previous version works without problems, here is my console log (Arch Linux, Zen kernel):
[nodata@nodata ~]$ cd Downloads/
[nodata@nodata Downloads]$ java -jar forge-1.18.2-40.0.13-installer.jar
Error: Invalid or corrupt jarfile forge-1.18.2-40.0.13-installer.jar
[nodata@nodata Downloads]$ java -jar forge-1.18.2-40.0.12-installer.jar
JVM info: N/A - 17.0.3 - 17.0.3+3
java.net.preferIPv4Stack=true
Found java version 17.0.3
I know that there is no longer support for 1.12.2, but it would be nice if there was a warning somewhere that 1.12.2 won't work with launcher for Debian Linux, so people won't be running around and searching. Arch linux works fine, so it's something with launcher