Minecraft Forums

Steps:

1. Open launcher

2. Sign into 1.7.10 fml

3. waiting screen (screen with single player, multiplayer, realms)

4. Click Multiplayer

5. Once server is clicked, instant crash to launcher

Happens every time i use 1.7.10 fml now, did not happen a few hours ago -

Mods:

[1.7.10]ArmorStatusHUD-client-1.28

[1.7.10]bspkrsCore-universal-6.16.sincommand

[1.7.10]StatusEffectHUD-client-1.27

OptiFine_1.7.10_HD_U_D4

PlayerAPI-1.7.10-1.1

ToggleSneak-(1.7.10)-v3.0

---- Minecraft Crash Report ----
// My bad.

Time: 1/9/17 6:55 PM
Description: Rendering screen

java.lang.IllegalArgumentException: bad Base64 input character at 4426: 128 (decimal)
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:247)
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:197)
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:188)
	at net.minecraft.client.gui.ServerListEntryNormal.func_148297_b(ServerListEntryNormal.java:203)
	at net.minecraft.client.gui.ServerListEntryNormal.func_148279_a(ServerListEntryNormal.java:165)
	at net.minecraft.client.gui.GuiListExtended.func_148126_a(SourceFile:26)
	at net.minecraft.client.gui.GuiSlot.func_148120_b(GuiSlot.java:433)
	at net.minecraft.client.gui.GuiSlot.func_148128_a(GuiSlot.java:306)
	at net.minecraft.client.gui.GuiMultiplayer.func_73863_a(GuiMultiplayer.java:344)
	at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1397)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
	at net.minecraft.client.main.Main.main(SourceFile:148)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


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

-- Head --
Stacktrace:
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:247)
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:197)
	at io.netty.handler.codec.base64.Base64.decode(Base64.java:188)
	at net.minecraft.client.gui.ServerListEntryNormal.func_148297_b(ServerListEntryNormal.java:203)
	at net.minecraft.client.gui.ServerListEntryNormal.func_148279_a(ServerListEntryNormal.java:165)
	at net.minecraft.client.gui.GuiListExtended.func_148126_a(SourceFile:26)
	at net.minecraft.client.gui.GuiSlot.func_148120_b(GuiSlot.java:433)
	at net.minecraft.client.gui.GuiSlot.func_148128_a(GuiSlot.java:306)
	at net.minecraft.client.gui.GuiMultiplayer.func_73863_a(GuiMultiplayer.java:344)

-- Screen render details --
Details:
	Screen name: net.minecraft.client.gui.GuiMultiplayer
	Mouse location: Scaled: (371, 111). Absolute: (743, 256)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
	at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1397)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
	at net.minecraft.client.main.Main.main(SourceFile:148)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 781504416 bytes (745 MB) / 1351090176 bytes (1288 MB) up to 7635730432 bytes (7282 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_D4 8 mods loaded, 8 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJA	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJA	FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar) 
	UCHIJA	Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar) 
	UCHIJA	PlayerAPI{1.1} [Player API] (minecraft.jar) 
	UCHIJA	bspkrsCore{6.16.sincommand} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.16.sincommand.jar) 
	UCHIJA	ArmorStatusHUD{1.28} [ArmorStatusHUD] ([1.7.10]ArmorStatusHUD-client-1.28.jar) 
	UCHIJA	StatusEffectHUD{1.27} [StatusEffectHUD] ([1.7.10]StatusEffectHUD-client-1.27.jar) 
	UCHIJA	ToggleSneak{3.0} [ToggleSneak] (ToggleSneak-(1.7.10)-v3.0.jar) 
	GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13399 Compatibility Profile Context 15.200.1062.1004' Renderer: 'AMD Radeon HD 6530D'
	Launched Version: 1.7.10-Forge10.13.4.1614-1.7.10
	LWJGL: 2.9.1
	OpenGL: AMD Radeon HD 6530D GL version 4.5.13399 Compatibility Profile Context 15.200.1062.1004, ATI Technologies Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Packs: [MineLoL [64x64] Realistic Resource Pack (V.1.10+).zip]
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)
	OptiFine Version: OptiFine_1.7.10_HD_U_D4
	Render Distance Chunks: 8
	Mipmaps: 0
	Anisotropic Filtering: 1
	Antialiasing: 0
	Multitexture: false
	OpenGlVersion: 4.5.13399 Compatibility Profile Context 15.200.1062.1004
	OpenGlRenderer: AMD Radeon HD 6530D
	OpenGlVendor: ATI Technologi


Please let me know if you know any solutions to this error, much appreciated 

Is it a modded server?