xaric

THAT WORKED! Thank you so much for your assistance. For Windows users, you can simply uninstall Java 7 if you don't explicitly need it. OR, you can edit your environment variables and change your PATH. Java 6 will be somewhere like: "C:\Program Files\Java ..." or something like that.

Yes, I did. Steps I took: I located the java v6 executable on my machine, which is located: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home/bin/java I validated that with the command: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home/bin/java -version which yields: java version "1.6.0_37" Java SE Runtime Environment (build 1.6.0_37-b06-434-11M3909) Java HotSpot 64-Bit Server VM (build 20.12-b01-434, mixed mode) At this point, I ran the following command to launch the technic-launcher targeting the v6 framework: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Home/bin/java -Xmx2048m -jar ~/Desktop/Technic Launcher.app/Contents/Resources/launcher/technic-launcher-latest.jar The output of that command runs the launcher, which quickly shells out a new instance (with added command-line options): 2012-12-02 15:48:32.073 java[1790:407] Loading Maximizer into bundle: com.apple.javajdk16.cmd 2012-12-02 15:48:32.308 java[1790:407] Maximizer: Supported window created of class: CocoaAppWindow 2012-12-02 15:48:32.311 java[1790:407] Maximizer: Unsupported window created of class: CocoaAppWindow Dec 2, 2012 3:48:32 PM org.spoutcraft.launcher.Util log WARNING: Rebooting with [java, -Xmx1024m, -classpath, /Users/[masked]/Desktop/Technic Launcher.app/Contents/Resources/launcher/technic-launcher-latest.jar, org.spoutcraft.launcher.Main, -Xdock:name="Technic Launcher", -Xdock:icon=/Users/[masked]/Library/Application Support/techniclauncher/launcher_icon.icns] At this point, when I run Tekkit, I get the same problem: White window which then closes. No additional errors are displayed in the terminal and the log file appears the same as above. I am guessing that because of the "WARNING: Rebooting" message, it is defaulting back to v7. How do I change control of that app to stick with the java version I've specified? (By-the-way, your help and consideration is MUCH appreciated.)

I've searched this forum and have seen a few others who have had this same problem. I also tried the steps mentioned in the "Fix Common Problems" post:

Launcher Version: 1.0.2.0 Operating System: Mac OSX Lion 10.7.5 Java Version: Java SE Runtime Environment (build 1.7.0_06-b24) Antivirus Program: None Description of Problem: Cannot run Minecraft from Technic launcher. White screen appears, then disappears. No errors, nothing indicative in the log file. Error Messages: Error Log: [12:08:40] [sEVERE] ------------------------------------------ [12:08:40] [sEVERE] Launcher is starting.... [12:08:40] [sEVERE] Launcher Build: '1.0.2.0' [12:08:40] [sEVERE] Allocated 910.25 Mb of RAM [12:08:40] [sEVERE] Java VM: '1.7.0_06-b24' [12:08:40] [sEVERE] OS Version: '10.7.5' [12:08:40] [sEVERE] Is 64-bit: 'true' [12:08:40] [sEVERE] [info] Downloading 'mirrors.yml' from 'http://mirror.technicpack.net/Technic/mirrors.yml'. [12:08:40] [sEVERE] Starting download of 'http://mirror.technicpack.net/Technic/CHECKSUM.md5', with 3 trie(s) remaining [12:08:41] [sEVERE] Copying: /temp/file4801088016509107703.tmp to: /launcher/CHECKSUM.md5 [12:08:41] [sEVERE] File Downloaded: /launcher/CHECKSUM.md5 [12:08:41] [sEVERE] [MD5 Mismatch] File '/launcher/tekkit/modpack.yml' has md5 of '06203d7c3d3d3b6b5658498d7e58e775' instead of 'a153f7d39fc0fb39a6808a6bc40c1909' [12:08:41] [sEVERE] [info] Downloading 'modpack.yml' from 'http://mirror.technicpack.net/Technic/tekkit/modpack.yml'. [12:08:41] [sEVERE] [info] Downloading 'minecraft.yml' from 'http://mirror.technicpack.net/Technic/minecraft.yml'. [12:08:47] [sEVERE] Loading Launcher from 'techniclauncher/tekkit'