hi [Mod] Kumasasa The other time my report was considered invalid because it did not understand my question.
I already reported this probrem before, pay attention this time.
view: https://bugs.mojang.com/browse/MCL-5361

This problem has to be with the launcher and not with minecraft.
I already tested with the old launcher and the current one, make sure it is not known and have an error with the new launcher.
All versions before 1.6.1 crash after loading on the mojang screen.
I'm sure it has already been tested in several versions, only the previous ones to 1.6.1 crash.
I personally kindly do not ignore the bug this time, for many minecraft users it is important to access old versions.

thanks for listening.

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Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Failed to start game

A full error report has been saved to C:\Users\USER\AppData\Roaming\.minecraft\crash-reports\crash-2017-02-02_13.49.08-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

— BEGIN ERROR REPORT 77677108 --------
Full report at:
C:\Users\USER\AppData\Roaming\.minecraft\crash-reports\crash-2017-02-02_13.49.08-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 02/02/17 13:49

– System Details –
Details:
Minecraft Version: 1.5.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 47181048 bytes (44 MB) / 127139840 bytes (121 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics 2500 GL version 4.0.0 - Build 10.18.10.4358, Intel
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~_ERROR~ NullPointerException: null

java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:97)
at bp.a(SourceFile:64)
at bp.a(SourceFile:100)
at net.minecraft.client.Minecraft.a(SourceFile:252)
at avv.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:507)
at java.lang.Thread.run(Thread.java:745)
— END ERROR REPORT fa91347 ----------