here is the log (with debug)
13:30:35.580
Preparing to launch minecraft client for 1.7.10-Forge10.13.4.1558-1.7.10
13:30:35.580
Prepared asset index
13:30:35.588
Have 727 total files to check or download
13:30:35.591
Waiting for 727 futures
13:30:35.711
Couldn't fetch SHA1 checksum for http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.7.10-10.13.4.1558-1.7.10/forge-1.7.10-10.13.4.1558-1.7.10.jar
13:30:35.712
Have local file C:\Users\rch2019\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.7.10-10.13.4.1558-1.7.10\forge-1.7.10-10.13.4.1558-1.7.10.jar but don't know what size or hash it should be. Have to assume it's good.
13:30:35.806
Couldn't fetch SHA1 checksum for https://s3.amazonaws.com/Minecraft.Download/versions/1.7.10/1.7.10.jar
13:30:35.808
Have local file C:\Users\rch2019\AppData\Roaming\.minecraft\versions\1.7.10\1.7.10.jar but don't know what size or hash it should be. Have to assume it's good.
13:30:35.808
Couldn't fetch SHA1 checksum for http://files.minecraftforge.net/maven/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar
13:30:35.809
Have local file C:\Users\rch2019\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar but don't know what size or hash it should be. Have to assume it's good.
13:30:35.835
Couldn't fetch SHA1 checksum for http://files.minecraftforge.net/maven/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar
13:30:35.836
Have local file C:\Users\rch2019\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar but don't know what size or hash it should be. Have to assume it's good.
13:30:36.696
Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
13:30:37.247
Unable to launch
java.lang.RuntimeException: java.lang.NullPointerException
at cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:137)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:213)
at com.google.common.hash.AbstractByteHasher.putBytes(AbstractByteHasher.java:69)
at com.google.common.hash.AbstractStreamingHashFunction.hashBytes(AbstractStreamingHashFunction.java:57)
at cpw.mods.fml.common.patcher.ClassPatchManager.applyPatch(ClassPatchManager.java:97)
at cpw.mods.fml.common.patcher.ClassPatchManager.getPatchedResource(ClassPatchManager.java:61)
at cpw.mods.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.getFieldType(FMLDeobfuscatingRemapper.java:193)
at cpw.mods.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.parseField(FMLDeobfuscatingRemapper.java:170)
at cpw.mods.fml.common.asm.transformers.deobf.FMLDeobfuscatingRemapper.setup(FMLDeobfuscatingRemapper.java:139)
at cpw.mods.fml.common.asm.FMLSanityChecker.injectData(FMLSanityChecker.java:182)
at cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:132)
... 2 more
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: cpw.mods.fml.relauncher.FMLSecurityManager$ExitTrappedException
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:25)
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.SecurityManager.checkExit(SecurityManager.java:761)
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Runtime.exit(Runtime.java:107)
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.System.exit(System.java:971)
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
13:30:37.251
[java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
13:30:37.289
13:30:37.289
Process crashed with exit code 1