Minecraft CurseForge

Hi!

I recently wanted to play some mods/modpacks on 1.4.7 for nostalgic reasons.

However, every time I launch a 1.4.7 modpack the game crashes. I've been looking around on the internet for a way to fix this for a couple of hours now, but to no avail.

Does anyone know how to get modded legacy versions to work in 2019? :P

Albeit I believe this crash/error is quite common, here's the crash report:

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 8/13/19 9:54 PM
Description: Failed to start game

java.lang.NullPointerException
	at java.io.Reader.<init>(Reader.java:78)
	at java.io.InputStreamReader.<init>(InputStreamReader.java:97)
	at bn.a(SourceFile:56)
	at bn.a(SourceFile:91)
	at net.minecraft.client.Minecraft.a(SourceFile:249)
	at asq.a(SourceFile:56)
	at net.minecraft.client.Minecraft.run(SourceFile:515)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.4.7
	Operating System: Windows 8.1 (amd64) version 6.3
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 219962736 bytes (209 MB) / 268435456 bytes (256 MB) up to 4294967296 bytes (4096 MB)
	JVM Flags: 10 total; -Xmx4096m -Xms256m -XX:PermSize=256m -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=51 -XX:G1HeapRegionSize=32M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
	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) UHD Graphics 630 GL version 4.5.0 - Build 23.20.16.5018, 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

In reply to Forge_User_58904352:

 Was this back when you had to modify the 'minecraft.jar' file?