None of the modpacks will launch, not even Vanilla.

[burkeryan7]

Launcher Version: Newest (build 203)

Operating System: Mac OSX 10.8.2

Java Version: Version 7 update 17

Antivirus Program:

Description of Problem:

I open the launcher, select a modpack, a white screen appears, and then it all crashes like I had never opened it in the first place. It does this for all the modpacks, even the custom ones I installed. Tekkit classic launched once, but that's it.

Also, the launcher frequently freezes up, and I have to shut it down.

Sometimes all the modpacks will continually say "loading" on their icons and never actually finish loading.

I know there are a lot of similar posts to this, but I'm posting because it seems that all of the posts like this are generally being ignored.

Error Messages:

None

Error Log:

I would put one in but then it won't let me submit this post. Too many characters.

[cor224]

It seems that all mac users have this problem i am hoping they fix it fast

[BLAZE MkIV]

The launcher should really check and warn Mac users that they don't support Java 1.7. Vanilla minecraft manages to but not any of the launchers.

[FCPWiz]

I have the same exact problem!

[illumination]

I think that is definitely the issue. I was having the same problems with not being able to launch mod packs at all, but after downgrading my Java to 1.6 I have been able to run tekkit lite 3 times in a row successfully.

I followed the instructions here to do that http://reviews.cnet.com/8301-13727_7-57539151-263/how-to-manage-the-java-6-and-java-7-runtimes-in-os-x/

[Oidking]

wrong page

[soxrok2212]

Finally found a fix, at least for OS X. When you're in the launcher, click the little settings icon, increase your ram from 1-2 gigs and check increase PermGen Size. Should stop crashing.