Braxbro

Not latest.log, fml-client-latest.log

Oh hehe, went to inspect the issue with 7zip and found the reference jar is corrupted. I'll see if replacing it with the universal copy works. Edit: IT DID. Wow. Thanks Lex, if you hadn't told me to look for a log file and where that class was, I'd have never put 2 and 2 together. Your reputation is now 1337.

The log above is the offline error log, gotten from Game Output. The game fails to launch.

I think the installer didn't work right when I ran it - is there a manual download or a component of Universal install that will fix the error?

Nope. How do I get it to be able to find the tweak class net.minecraftforge.fml.common.launcher.FMLTweaker? Is it a library of some form I need to locate?

The java launcher works fine on every other version I have - but not 1.10.2 forge. Although it seems I may have fixed it with my latest tampering.

I don’t use the modern launcher on any of my devices anymore. I use the java launcher.

The game throws an error and quits before launch. The Minecraft launcher closes, then waits a bit and reopens with a game output window saying the above error.

1.7.10 seems to be fixed now, but 1.10.2 isn’t. How do i use spoiler tags? Ok, game output since there is no fml client log: [11:11:43] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker[11:11:43] [main/ERROR]: Unable to launchjava.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweakerat java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_77]at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_77]at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.8.0_77]at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_77]at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.12.jar:?]at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_77]at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_77]at java.lang.Class.forName0(Native Method) ~[?:1.8.0_77]at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_77]at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.12.jar:?]at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

I am using the most recent Java launcher (native doesn't play nice with my firewall). it says: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker Unable to launch java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker then just the typical 64bit CMS GC warning after ~10 lines of java stuff pertinent to the ClassNotFoundException.

Fair enough. I knew something was fishy with that log too - it's not what I see when I run Forge.

Try the vanilla MC launcher.

Huh. It should be looking for somwhere on Minecraftforge.net

If you have a 144 hz monitor then set your FPS cap to 144. Anything above it is just a waste of processor power.

That's because that doesn’t exist. How did you install Forge?