It is heavily modded, added the crash report from testing it in vanilla to the previous comment.
I was able to replicate it in vanilla by simply double clicking on the Minecraft icon in the taskbar.
Here is the error in the development console:
[00:29:04 INFO]: Client> java.io.IOException: Stream Closed
[00:29:04 INFO]: Client> at java.io.RandomAccessFile.seek(Native Method)
[00:29:04 INFO]: Client> at aeb.a(SourceFile:308)
[00:29:04 INFO]: Client> at aeb.a(SourceFile:251)
[00:29:04 INFO]: Client> at aec.close(SourceFile:232)
[00:29:04 INFO]: Client> at java.util.zip.DeflaterOutputStream.close(Unknown Source)
[00:29:04 INFO]: Client> at java.io.FilterOutputStream.close(Unknown Source)
[00:29:04 INFO]: Client> at aee.a(SourceFile:140)
[00:29:04 INFO]: Client> at aee.c(SourceFile:128)
[00:29:04 INFO]: Client> at ams.b(SourceFile:30)
[00:29:04 INFO]: Client> at ams.run(SourceFile:23)
[00:29:04 INFO]: Client> at java.lang.Thread.run(Unknown Source)
[00:29:04 INFO]: Client> 2014-03-12 00:29:04 [SERVER] [INFO] Saving worlds
[00:29:04 INFO]: Client> 2014-03-12 00:29:04 [SERVER] [INFO] Saving chunks for level 'Odin's Paradise'/Overworld
[00:29:04 INFO]: Client> 2014-03-12 00:29:04 [SERVER] [INFO] Saving chunks for level 'Odin's Paradise'/Nether
[00:29:04 INFO]: Client> 2014-03-12 00:29:04 [SERVER] [INFO] Saving chunks for level 'Odin's Paradise'/The End
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff916881ace, pid=5208, tid=4256
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13)
[00:29:05 INFO]: Client> # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.51-b03 mixed mode windows-amd64 compressed oops)
[00:29:05 INFO]: Client> # Problematic frame:
[00:29:05 INFO]: Client> # C [ig4icd64.dll+0x11ace]
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # An error report file with more information is saved as:
[00:29:05 INFO]: Client> # C:\Users\attk\AppData\Roaming\.minecraft\hs_err_pid5208.log
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> # If you would like to submit a bug report, please visit:
[00:29:05 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp
[00:29:05 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[00:29:05 INFO]: Client> # See problematic frame for where to report the bug.
[00:29:05 INFO]: Client> #
[00:29:05 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed
[00:29:05 ERROR]: Game ended with bad state (exit code 1)
I've seen that minimizing the game could be a cause of this, and that looks to be the case.
It doesn't look like there are any legitimate options that could help me frmo the link you've provided. I've posted this on the community forums with no response, I've looked through the wiki and troubleshooting articles, this is the bug tracker, the crash lookup page was not found, and hopper has nothing about my issue. The only thing I haven't tried is the IRC, if the forums won't work I doubt the IRC will.