Game crashes when trying to open or join world using forge (Solved)

[fantom42]

[Choonster]

You cut off the start of the crash report. Post the full crash report from C:\Program Files (x86)\Minecraft\ATLauncher\Instances\CrundeeCraft\crash-reports\crash-2015-09-07_09.16.24-client.txt.

[fantom42]

[fantom42]

[fantom42]

Does anybody have any idea for something I could try. 

[fantom42]

I also tested vanilla minecraft and forge with no mods and it still gets the same problem.  Please anybody, i am completely lost.

[Choonster]

Caused by: java.net.SocketException: Invalid argument: connect

 

I'm not entirely sure, but this could be caused by Java using IPv6 instead of IPv4. Try adding

-Djava.net.preferIPv4Stack=true

to the Java command line arguments (Settings -> Java/Minecraft -> Java Parameters in the ATLauncher).

 

Also make sure Minecraft isn't being blocked by your firewall.

[fantom42]

Caused by: java.net.SocketException: Invalid argument: connect

 

I'm not entirely sure, but this could be caused by Java using IPv6 instead of IPv4. Try adding

-Djava.net.preferIPv4Stack=true

to the Java command line arguments (Settings -> Java/Minecraft -> Java Parameters in the ATLauncher).

 

Thank you that fixed the problem.  Do you have any clue why it would be trying to use IPv6 instead of IPv4?

[Choonster]

Thank you that fixed the problem.  Do you have any clue why it would be trying to use IPv6 instead of IPv4?

 

I'm not too sure, sorry. I just found a lot of people with the same exception message having that solution recommended to them.