[MC-87004] Game crashes when trying to open a world

I expected to be able to have a world loaded and would be able to play

What actually happened was the game crashed before it could load the game

I tried to start the game as usual, by pressing the play button on the launcher,
I then went on to singleplayer and picked a world to play,
the words loading world and building terrain appeared for about 3 seconds before it crashed and a crash report appeared,
after failing to fix this problem myself I pressed on 'report to Mojang'

Related issues

duplicates

MC-34749 Hopper: java.lang.IllegalStateException: failed to create a child event loop - Caused by AntiVirus / Firewall software

Attachments

crash-2015-08-22_13.36.17-client.txt

Comments

migrated 2015-08-22T12:24:35Z

[media]

migrated 2015-08-22T12:24:59Z

Thank you for your report.
However, your ticket has been resolved as incomplete.

We are unable to diagnose your issue due to the lack of proper debug information. Please review the guidelines before reporting issues.
In case of a game crash, please also attach the crash log from [minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder].

Reminder: For technical support please use the Mojang Support Center.

migrated 2015-08-22T12:43:59Z

Duplicate of MC-34749

migrated 2015-08-22T12:44:15Z

I have added a crash report and tried to add more information to my report, thank you for the help.