I am using the version 1.3.1 to try something out. I figured it is because of Java, because later versions which dont require it still work as planned. I already reinstalled minecraft and the launcher and reinstalled Java twice both for 64 and 32bit. Nothing seems to work. I always get the same crash report too.[/p]
Here it is:[/p]
---- Minecraft Crash Report ----[/p]
// Sorry [/p]
Time: 04.01.19 18:32[/p]
Description: Failed to start game[/p]
java.lang.NullPointerException[/p]
at java.io.Reader.<init>([Reader.java:78](https://Reader.java:78))
Say something silly, Laugh 'til it hurts, Take a risk, Sing out loud, Rock the boat, Shake things up, Flirt with disaster, Buy something frivolous, Color outside the lines, Cause a scene, Order dessert, Make waves, Get carried away, Have a great day!
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Here it is:[/p]
---- Minecraft Crash Report ----[/p] // Sorry
Time: 04.01.19 18:32[/p] Description: Failed to start game[/p]
java.lang.NullPointerException[/p] at java.io.Reader.<init>([Reader.java:78](https://Reader.java:78))
at java.io.InputStreamReader.<init>([InputStreamReader.java:97](https://InputStreamReader.java:97))
at ak.a(SourceFile:56)
at ak.a(SourceFile:91)
at net.minecraft.client.Minecraft.a(SourceFile:250)
at [net.minecraft.client.Minecraft.run](https://net.minecraft.client.Minecraft.run)(SourceFile:516)
at [java.lang.Thread.run](https://java.lang.Thread.run)([Thread.java:745](https://Thread.java:745))
[/pre]
Relevant Details:[/p] - Minecraft Version: 1.3.1[/p] - Operating System: Windows 10 (amd64) version 10.0[/p] - Java Version: 1.8.0_51, Oracle Corporation[/p] - Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation[/p] - Memory: 222906744 bytes (212 MB) / 268435456 bytes (256 MB) up to 2147483648 bytes (2048 MB)[/p] - JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M[/p] - LWJGL: 2.9.0[/p] - OpenGL: GeForce GTX 970/PCIe/SSE2 GL version 4.6.0 NVIDIA 417.35, NVIDIA Corporation[/p] - Is Modded: Probably not[/p] - Type: Client[/p] - Texture Pack: Default[/p] - Profiler Position: N/A (disabled)[/p]
Use separate game directories for old versions.
How?
See this on how to use separate game directories:
https://help.mojang.com/customer/portal/articles/1475923-changing-game-versions