Erik van Zijst

Looking more closely I'm not sure where the 1.14.4 jars come from. I freshly installed Minecraft 1.15. Could the problem be that I'm using forge 1.14 on a Minecraft 1.15 installation?

Same here. Running the forge installer it chokes on the minecraft jar file halfway: $ tail -n 20 forge-1.14.4-28.1.0-installer.jar.log Data assets/minecraft/textures/gui/stream_indicator.png Data assets/minecraft/textures/gui/presets/drought.png Data assets/minecraft/textures/gui/presets/isles.png Data assets/minecraft/textures/gui/presets/luck.png Data assets/minecraft/textures/gui/presets/delight.png Data assets/minecraft/textures/gui/presets/chaos.png Data assets/minecraft/textures/gui/presets/water.png Data assets/minecraft/textures/gui/presets/madness.png Data assets/minecraft/textures/gui/book.png Data assets/minecraft/textures/gui/accessibility.png Data assets/minecraft/textures/gui/title/mojang.png Data assets/minecraft/textures/gui/title/background/panorama_1.png Data assets/minecraft/textures/gui/title/background/panorama_2.png Data assets/minecraft/textures/gui/title/background/panorama_4.png Data assets/minecraft/textures/gui/title/background/panorama_0.png Data assets/minecraft/textures/gui/title/background/panorama_overlay.png Data assets/minecraft/textures/gui/title/background/panorama_3.png Data assets/minecraft/textures/gui/title/background/panorama_5.png Failed to run processor: java.io.EOFException:Unexpected end of ZLIB input stream See log for more details. $ OSX 10.14.6 Oracle JDK 13.0.1 Minecraft 1.15 FWIW, I'm getting the same error trying to manually un-jar Minecraft's ~/Library/Application Support/minecraft/versions/1.14.4/1.14.4.jar $ jar -xfv 1.14.4.jar ... inflated: assets/minecraft/textures/gui/presets/madness.png inflated: assets/minecraft/textures/gui/book.png inflated: assets/minecraft/textures/gui/accessibility.png inflated: assets/minecraft/textures/gui/title/mojang.png inflated: assets/minecraft/textures/gui/title/background/panorama_1.png inflated: assets/minecraft/textures/gui/title/background/panorama_2.png inflated: assets/minecraft/textures/gui/title/background/panorama_4.png inflated: assets/minecraft/textures/gui/title/background/panorama_0.png inflated: assets/minecraft/textures/gui/title/background/panorama_overlay.png inflated: assets/minecraft/textures/gui/title/background/panorama_3.png java.io.EOFException: Unexpected end of ZLIB input stream at java.base/java.util.zip.InflaterInputStream.fill(InflaterInputStream.java:245) at java.base/java.util.zip.InflaterInputStream.read(InflaterInputStream.java:159) at java.base/java.util.zip.ZipInputStream.read(ZipInputStream.java:195) at java.base/java.util.zip.ZipInputStream.closeEntry(ZipInputStream.java:141) at jdk.jartool/sun.tools.jar.Main.extractFile(Main.java:1456) at jdk.jartool/sun.tools.jar.Main.extract(Main.java:1363) at jdk.jartool/sun.tools.jar.Main.run(Main.java:409) at jdk.jartool/sun.tools.jar.Main.main(Main.java:1680) $ jar --version jar 13.0.1 $ java --version java 13.0.1 2019-10-15 Java(TM) SE Runtime Environment (build 13.0.1+9) Java HotSpot(TM) 64-Bit Server VM (build 13.0.1+9, mixed mode, sharing) $ Erik