---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 21.03.16 18:25
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
at azf.i(SourceFile:64)
at azf.<init>(SourceFile:50)
at azc.<init>(SourceFile:21)
at azd.a(SourceFile:83)
at bcf.a(SourceFile:2085)
at bhn.e(SourceFile:227)
at bhn.a(SourceFile:182)
at bhn.a(SourceFile:154)
at bdl.b(SourceFile:41)
at bhm.a(SourceFile:118)
at bfb.k(SourceFile:404)
at bhm.k(SourceFile:50)
at bfb.p(SourceFile:381)
at bcf.t(SourceFile:1575)
at bcf.av(SourceFile:962)
at bcf.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)

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

– Head –
Stacktrace:
at azf.i(SourceFile:64)
at azf.<init>(SourceFile:50)
at azc.<init>(SourceFile:21)
at azd.a(SourceFile:83)
at bcf.a(SourceFile:2085)
at bhn.e(SourceFile:227)
at bhn.a(SourceFile:182)
at bhn.a(SourceFile:154)
at bdl.b(SourceFile:41)
at bhm.a(SourceFile:118)
at bfb.k(SourceFile:404)
at bhm.k(SourceFile:50)
at bfb.p(SourceFile:381)

– Affected screen –
Details:
Screen name: bhm
Stacktrace:
at bcf.t(SourceFile:1575)
at bcf.av(SourceFile:962)
at bcf.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.9
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: 155684096 bytes (148 MB) / 216555520 bytes (206 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
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.9
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 10.18.15.4274, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
______________________________
---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 21.03.16 18:12
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
at azf.i(SourceFile:64)
at azf.<init>(SourceFile:50)
at azc.<init>(SourceFile:21)
at azd.a(SourceFile:83)
at bcf.a(SourceFile:2085)
at bhn.e(SourceFile:227)
at bhn.a(SourceFile:182)
at bhn.a(SourceFile:148)
at bdl.b(SourceFile:41)
at bhm.a(SourceFile:118)
at bfb.k(SourceFile:404)
at bhm.k(SourceFile:50)
at bfb.p(SourceFile:381)
at bcf.t(SourceFile:1575)
at bcf.av(SourceFile:962)
at bcf.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)

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

– Head –
Stacktrace:
at azf.i(SourceFile:64)
at azf.<init>(SourceFile:50)
at azc.<init>(SourceFile:21)
at azd.a(SourceFile:83)
at bcf.a(SourceFile:2085)
at bhn.e(SourceFile:227)
at bhn.a(SourceFile:182)
at bhn.a(SourceFile:148)
at bdl.b(SourceFile:41)
at bhm.a(SourceFile:118)
at bfb.k(SourceFile:404)
at bhm.k(SourceFile:50)
at bfb.p(SourceFile:381)

– Affected screen –
Details:
Screen name: bhm
Stacktrace:
at bcf.t(SourceFile:1575)
at bcf.av(SourceFile:962)
at bcf.a(SourceFile:392)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.9
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: 171527880 bytes (163 MB) / 231333888 bytes (220 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
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.9
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 10.18.15.4274, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz