Hello, I am BlissfulKnight. I have been having a problem for the past month or so, where the versions 1.3.1-1.5 will not load up. If delete my whole .minecraft folder, which I've tried, the versions will start to load up just fine, display the Mojang screen, but then a crash screen will come up. Here is the log if you need to view it. I used version 1.4.5. 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\Cy\AppData\Roaming\.minecraft\crash-reports\crash-2017-04-04_17.57.58-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 6a83c4bf -------- Full report at: C:\Users\Cy\AppData\Roaming\.minecraft\crash-reports\crash-2017-04-04_17.57.58-client.txt Please show that file to Mojang, NOT just this screen! Generated 4/4/17 5:57 PM -- System Details -- Details: Minecraft Version: 1.4.5 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: 53696112 bytes (51 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: AMD Radeon HD 8240 GL version 4.5.13399 Compatibility Profile Context 15.200.1060.0, ATI Technologies Inc. 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 bn.a(SourceFile:56) at bn.a(SourceFile:91) at net.minecraft.client.Minecraft.a(SourceFile:249) at net.minecraft.client.Minecraft.run(SourceFile:515) at java.lang.Thread.run(Thread.java:745) --- END ERROR REPORT f759bb0a ---------- If I already have tried and failed at starting up any of these versions, if I start it up, the launcher will simply stop responding, and Minecraft will not start up. I have tried deleting the versions in the versions folder, I have fully deleted the .minecraft folder, and I have tried many times on all of these versions to start them up. If there is anything I can do to get these versions to start up and function again, please inform me about it. I do enjoy playing these versions of Minecraft. Sincerely, BlissfulKnight.