Old versions won't launch on Snow Leopard

Any version older than 1.5.2 will be downloaded but fails to launch. I tried 1.4.7, 1.2, beta 1.7.3 and alpha 1.04.

Launcher 1.2.1 (through bootstrap 4) started on osx...
Current time is Aug 7, 2013 11:28:22 AM
System.getProperty('os.name') == 'Mac OS X'
System.getProperty('os.version') == '10.6.8'
System.getProperty('os.arch') == 'x86_64'
System.getProperty('java.version') == '1.6.0_51'
System.getProperty('java.vendor') == 'Apple Inc.'
System.getProperty('sun.arch.data.model') == '64'
Loaded 6 profile(s); selected 'Forge'
Refreshing auth...
Logging in with access token
Delta time to compare resources: 8324 ms 
Download job 'Resources' skipped as there are no files to download
Job 'Resources' finished successfully
Getting syncinfo for selected version
Queueing library & version downloads
Download job 'Version & Libraries' started (8 threads, 11 files)
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-osx.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-osx.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/org/ow2/asm/asm-all/4.1/asm-all-4.1.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/minecraft/launchwrapper/1.5/launchwrapper-1.5.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.0/lwjgl-platform-2.9.0-natives-osx.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar for job 'Version & Libraries': Used own copy as it matched etag
Finished downloading /Users/Wedhro/Library/Application Support/minecraft/versions/b1.7.3/b1.7.3.jar for job 'Version & Libraries': Used own copy as it matched etag
Job 'Version & Libraries' finished successfully
Launching game
Looking for old natives to clean up...
Unpacking natives to /Users/Wedhro/Library/Application Support/minecraft/versions/b1.7.3/b1.7.3-natives-1375867712695083000
Launching in /Users/Wedhro/Library/Application Support/minecraft
Running /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java -Xdock:icon=/Users/Wedhro/Library/Application Support/minecraft/assets/icons/minecraft.icns -Xdock:name=Minecraft -Xmx1G -Djava.library.path=/Users/Wedhro/Library/Application Support/minecraft/versions/b1.7.3/b1.7.3-natives-1375867712695083000 -cp /Users/Wedhro/Library/Application Support/minecraft/libraries/net/minecraft/launchwrapper/1.5/launchwrapper-1.5.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/org/ow2/asm/asm-all/4.1/asm-all-4.1.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl/2.9.0/lwjgl-2.9.0.jar:/Users/Wedhro/Library/Application Support/minecraft/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.0/lwjgl_util-2.9.0.jar:/Users/Wedhro/Library/Application Support/minecraft/versions/b1.7.3/b1.7.3.jar net.minecraft.launchwrapper.Launch Wedhro token:cdd4432a0fcd4aa190ee10b1c006beb8:12376c3e417248148dc3a7271d9863f8 --gameDir /Users/Wedhro/Library/Application Support/minecraft --assetsDir /Users/Wedhro/Library/Application Support/minecraft/assets
Client> 7-ago-2013 11.28.33 net.minecraft.launchwrapper.LogWrapper log
Client> INFO: Using tweak class name net.minecraft.launchwrapper.VanillaTweaker
Client> 7-ago-2013 11.28.33 net.minecraft.launchwrapper.LogWrapper log
Client> INFO: Launching wrapped minecraft
Client> 16 achievements
Client> 151 recipes
Client> Turning of ImageIO disk-caching
Client> Loading current icons for window from: /Users/Wedhro/Library/Application Support/minecraft/assets/icons/icon_16x16.png and /Users/Wedhro/Library/Application Support/minecraft/assets/icons/icon_32x32.png
Client> Invalid memory access of location 0x0 rip=0x0
Client> 
Game ended with bad state (exit code 139)
Ignoring visibility rule and showing launcher due to a game crash
Deleting /Users/Wedhro/Library/Application Support/minecraft/versions/b1.7.3/b1.7.3-natives-1375867712695083000