These mods aren't working for some reason, I'm not sure why since I followed the steps, I installed the older versions of little blocks and SlimeVoidLib. (Littleblocks is at 2.2.3.1 and slimevoidLib is at 2.1.0.0 which is said to be needed to run the Gulliver mod with little blocks) Down below is the report that showed up. It might be that I at first accidentally installed Normal Gulliver instead of the forged version.
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) Client VM, version 1.8.0_151, running on Windows 10:x86:10.0, installed at C:\Program Files (x86)\Java\jre1.8.0_151
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-01-23 19:26:56 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
Note: Before you ask I am using -Dfml.ignorePatchDiscrepancies=true
These mods aren't working for some reason, I'm not sure why since I followed the steps, I installed the older versions of little blocks and SlimeVoidLib. (Littleblocks is at 2.2.3.1 and slimevoidLib is at 2.1.0.0 which is said to be needed to run the Gulliver mod with little blocks) Down below is the report that showed up. It might be that I at first accidentally installed Normal Gulliver instead of the forged version.
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Jan 23, 2018 7:26:56 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) Client VM, version 1.8.0_151, running on Windows 10:x86:10.0, installed at C:\Program Files (x86)\Java\jre1.8.0_151
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2018-01-23 19:26:56 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2018-01-23 19:26:56 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.remove(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
Note: Before you ask I am using -Dfml.ignorePatchDiscrepancies=true
Use Java 7 or LegacyJavaFixer.
This issue has came up pretty often, so you should look around next time.