ON OSX MINECRAFT 1.4.5 : APP DID NOT START - JAVA JAR CRASHED

ON OSX

clicking on the just downloaded Minecraft.app i get
"File is damaged - move to the trash?"

SO I TRIED TO START (AS AN ALTERNATIVE)
java -jar minecraft.jar

BUT I GET THE FOLLOWING ERROR:

---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 24/11/12 10.53
Description: Failed to start game

org.lwjgl.LWJGLException: Could not get the JAWT interface
        at org.lwjgl.opengl.AWTSurfaceLock.lockAndInitHandle(Native Method)
        at org.lwjgl.opengl.AWTSurfaceLock.access$100(AWTSurfaceLock.java:49)
        at org.lwjgl.opengl.AWTSurfaceLock$1.run(AWTSurfaceLock.java:89)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.lwjgl.opengl.AWTSurfaceLock.privilegedLockAndInitHandle(AWTSurfaceLock.java:86)
        at org.lwjgl.opengl.AWTSurfaceLock.lockAndGetHandle(AWTSurfaceLock.java:64)
        at org.lwjgl.opengl.MacOSXCanvasPeerInfo.initHandle(MacOSXCanvasPeerInfo.java:53)
        at org.lwjgl.opengl.MacOSXDisplayPeerInfo.doLockAndInitHandle(MacOSXDisplayPeerInfo.java:56)
        at org.lwjgl.opengl.PeerInfo.lockAndGetHandle(PeerInfo.java:85)
        at org.lwjgl.opengl.MacOSXContextImplementation.create(MacOSXContextImplementation.java:47)
        at org.lwjgl.opengl.Context.<init>(Context.java:120)
        at org.lwjgl.opengl.Display.create(Display.java:858)
        at org.lwjgl.opengl.Display.create(Display.java:784)
        at org.lwjgl.opengl.Display.create(Display.java:765)
        at net.minecraft.client.Minecraft.a(SourceFile:232)
        at net.minecraft.client.Minecraft.run(SourceFile:515)
        at java.lang.Thread.run(Thread.java:722)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
        Minecraft Version: 1.4.5
        Operating System: Mac OS X (x86_64) version 10.8.2
        Java Version: 1.7.0_09, Oracle Corporation
        Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
        Memory: 45313760 bytes (43 MB) / 86376448 bytes (82 MB) up to 1282539520 bytes (1223 MB)
        JVM Flags: 0 total;
        AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
        Suspicious classes: No suspicious classes found.
        IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
        LWJGL: 2.4.2
        OpenGL: ~~ERROR~~ NullPointerException: null
        Is Modded: Probably not. Jar signature remains and client brand is untouched.
        Type: Client (map_client.txt)
        Texture Pack: ~~ERROR~~ NullPointerException: null
        Profiler Position: N/A (disabled)
        Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
~                                                                                                                                                                                                                                  



      Minecraft has crashed!      
      ----------------------      

Minecraft has stopped running because it encountered a problem; Failed to start game

A full error report has been saved to /Users/ottavio/Library/Application Support/minecraft/crash-reports/crash-2012-11-24_10.53.13-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(



--- BEGIN ERROR REPORT f4ed7a46 --------
Full report at:
/Users/ottavio/Library/Application Support/minecraft/crash-reports/crash-2012-11-24_10.53.13-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 24/11/12 10.53

-- System Details --
Details:
	Minecraft Version: 1.4.5
	Operating System: Mac OS X (x86_64) version 10.8.2
	Java Version: 1.7.0_09, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 45313760 bytes (43 MB) / 86376448 bytes (82 MB) up to 1282539520 bytes (1223 MB)
	JVM Flags: 0 total; 
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.4.2
	OpenGL: ~~ERROR~~ NullPointerException: null
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: ~~ERROR~~ NullPointerException: null
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null[failed to get system properties (java.lang.NullPointerException)]


org.lwjgl.LWJGLException: Could not get the JAWT interface
	at org.lwjgl.opengl.AWTSurfaceLock.lockAndInitHandle(Native Method)
	at org.lwjgl.opengl.AWTSurfaceLock.access$100(AWTSurfaceLock.java:49)
	at org.lwjgl.opengl.AWTSurfaceLock$1.run(AWTSurfaceLock.java:89)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.lwjgl.opengl.AWTSurfaceLock.privilegedLockAndInitHandle(AWTSurfaceLock.java:86)
	at org.lwjgl.opengl.AWTSurfaceLock.lockAndGetHandle(AWTSurfaceLock.java:64)
	at org.lwjgl.opengl.MacOSXCanvasPeerInfo.initHandle(MacOSXCanvasPeerInfo.java:53)
	at org.lwjgl.opengl.MacOSXDisplayPeerInfo.doLockAndInitHandle(MacOSXDisplayPeerInfo.java:56)
	at org.lwjgl.opengl.PeerInfo.lockAndGetHandle(PeerInfo.java:85)
	at org.lwjgl.opengl.MacOSXContextImplementation.create(MacOSXContextImplementation.java:47)
	at org.lwjgl.opengl.Context.<init>(Context.java:120)
	at org.lwjgl.opengl.Display.create(Display.java:858)
	at org.lwjgl.opengl.Display.create(Display.java:784)
	at org.lwjgl.opengl.Display.create(Display.java:765)
	at net.minecraft.client.Minecraft.a(SourceFile:232)
	at net.minecraft.client.Minecraft.run(SourceFile:515)
	at java.lang.Thread.run(Thread.java:722)
--- END ERROR REPORT 4de7dde7 ----------