Minecraft Forums

I'll get straight to the point:

Minecraft crashed while playing old versions of minecraft.

Here's the report

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Minecraft has crashed!
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Minecraft has stopped running because it encountered a problem.

--- BEGIN ERROR REPORT 7cf3a456 --------
Generated 4/23/18 1:53 AM

Minecraft: Minecraft 1.2.5
OS: Windows 10 (amd64) version 10.0
Java: 1.8.0_161, Oracle Corporation
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics 610 version 4.5.0 - Build 22.20.16.4729, Intel

java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(Unknown Source)
at adn.a(SourceFile:62)
at adn.a(SourceFile:99)
at net.minecraft.client.Minecraft.a(SourceFile:262)
at net.minecraft.client.Minecraft.run(SourceFile:657)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 361eb8e2 ----------

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Run older versions in separate directories.

To change directories, please read this guide.

More info here: https://bugs.mojang.com/browse/MCL-5837

Thank you very much! Its fine now, and thanks for replying!