Java 7 Crashes The Launcher

[Iestyn]

Launcher Version: 1.0.2.0

Operating System: OSX Mountain Lion 64bit

Java Version: Java 7 Update 9

Antivirus Program: None

Description of Problem:

I run on the latest version of the Mac operation system. This is where the problems started, this morning I fired up the computer and I was notified of an update. This ended up being an update for Java, which I installed. I was running version 6 of Java before and I could get into Minecraft but now, it's updated me to Java version 7 update 9 and every time I fire up Tekkit, it gets to the sign in page, and once I click login, the Tekkit launcher quits, and it just will not allow me to enter into the game.

Within the last month I had issues with Java 7 and I was simply able to un-tick the a Java 7 tick box and it would revert back to Java 6, but I couldn't find this option anymore, so I decided to ring Apple, and they told me if I want to revert back to version 6 I'd have to re-install the whole operation system :-/

I'm just wondering if anyones experienced this same issue and managed to find a fix/way around it. I'd really appreciate it.

Error Messages:

None, once I click the login button it just quits the launcher window.

Error Log:

[12:26:22] [sEVERE]	Launcher is starting....

[12:26:22] [sEVERE]	Launcher Build: '1.0.2.0'

[12:26:22] [sEVERE]	Allocated 1820.5 Mb of RAM

[12:26:22] [sEVERE]	Java VM: '1.7.0_07-b10'

[12:26:22] [sEVERE]	OS Version: '10.8.2'

[12:26:22] [sEVERE]	Is 64-bit: 'true'

[12:26:23] [sEVERE]	[info] Downloading 'mirrors.yml' from 'http://mirror.technicpack.net/Technic/mirrors.yml'.

[12:26:23] [sEVERE]	Starting download of 'http://mirror.technicpack.net/Technic/CHECKSUM.md5', with 3 trie(s) remaining

[12:26:24] [sEVERE]	Copying: /temp/file1833011422536103885.tmp to: /launcher/CHECKSUM.md5

[12:26:24] [sEVERE]	File Downloaded: /launcher/CHECKSUM.md5

[12:26:24] [sEVERE]	[MD5 Mismatch] File '/launcher/tekkit/modpack.yml' has md5 of '0617096edb6df25e4377a265c12483ba' instead of '032eedc7183acde5b75cd13f9ff2e324'

[12:26:24] [sEVERE]	[info] Downloading 'modpack.yml' from 'http://206.217.207.1/Technic/tekkit/modpack.yml'.

[12:26:25] [sEVERE]	[info] Downloading 'minecraft.yml' from 'http://206.217.207.1/Technic/minecraft.yml'.

[adeadshot]

Same problem here, some of these posts are helpful, others just ridiculous.

Anyway, you used to be abled to go to Applications/Utilities/Java Preferences, but i have no Idea why they would cut that out.

Apple released a way to revert to Java 6 but it doesn't work for me.

Hopefully this can help you:

http://support.apple.com/kb/HT5559

[cloudflower28]

After following steps 1 to 5 in the process linked above (http://support.apple.com/kb/HT5559) Technic Launcher was still not working for me. So I decided to uninstall Java 7 completely by doing the process here:

http://java.com/en/download/help/mac_uninstall_java.xml

After I did that, the Technic Lancher worked perfectly

Hope that helps you all.

[Nuclear_Gecko17]

I was able to downgrade to Java SE 6u37, but the launcher still quits as soon as I login. If you wanna know how to downgrade to Java SE 6u37 here's the tutorial:

[theMLGeffect]

Guys, I was having this problem too, searched for hours and came upon this thread. Thanks to saintnicster, I was able to revert back to Java 6 without having to reinstall my OS (which by the way is 10.7.5, so the download does work with older versions).

Here's how I did it:

1. Download the Java Preferences zip that saintnicster so graciously provided.

2. Open Java Preferences

3. Right click on Java 7 (should open new finder window with one item in it called "1.7.0 jdk")

4. Move 1.7.0 jdk to trash

5. Open Technic Launcher, Sign in and have fun!

Hope this helps anyone still having trouble!

wow thank you endless hours of searching finally paid off!

[macis]

could some body please explain that to me i have also the white screen problem I'm not so good with a mac so it would be really nice if i would get some help...

[19:12:52] [sEVERE]2012-12-18 19:12:52 [sEVERE] A critical error has occurred.

java.lang.NoSuchFieldError: energyStored

at buildcraft.transport.pipes.PipePowerWood.updateEntity(PipePowerWood.java:80)

at buildcraft.transport.TileGenericPipe.n_(TileGenericPipe.java:124)

at xd.n(World.java:2081)

at net.minecraft.client.Minecraft.k(Minecraft.java:1871)

at net.minecraft.client.Minecraft.x(Minecraft.java:825)

at net.minecraft.client.Minecraft.run(Minecraft.java:753)

at java.lang.Thread.run(Thread.java:680)

[aaa888]

same problem im really stressed out ive tried everything! and if i had to how do i re-install the whole operating system??

[Pizzacheese4]

Guys, I was having this problem too, searched for hours and came upon this thread. Thanks to saintnicster, I was able to revert back to Java 6 without having to reinstall my OS (which by the way is 10.7.5, so the download does work with older versions).

Here's how I did it:

1. Download the Java Preferences zip that saintnicster so graciously provided.

2. Open Java Preferences

3. Right click on Java 7 (should open new finder window with one item in it called "1.7.0 jdk")

4. Move 1.7.0 jdk to trash

5. Open Technic Launcher, Sign in and have fun!

Hope this helps anyone still having trouble!

right clicking it doesn't do anything for me, but it works if i double click it. also, i did everything you said, but it still doesn't work. Any ideas?

[Jorcer]

right clicking it doesn't do anything for me, but it works if i double click it. also, i did everything you said, but it still doesn't work. Any ideas?

This fix is quite old and the launcher has been updated several times since then. If you have an issue, post a bug report.

[nevan24]

http://support.apple.com/kb/HT5559??

Click above link to downgrade to Java 6 again.