Block called

	[NSTask launchedTaskWithLaunchPath:@"/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool"
							 arguments:[NSArray arrayWithObjects:
										@"-e",
										@"PVRTC",
										@"--channel-weighting-perceptual",
										compressionLevel,
										@"-f",
										@"PVR",
										@"-o",
										compressedTexturePath,
										@"-p",
										compressedTexturePreviewPath,
										uncompressedImagePath,
										nil]
					 completionHandler:^(int termStatus)
	{
                NSLog(@"Zomg it got called");
		if(0 == termStatus)
		{
			[self setPreviewImage:[[[NSImage alloc] initWithContentsOfFile:compressedTexturePreviewPath] autorelease]];
			[self setTextureData:[NSData dataWithContentsOfFile:compressedTexturePath]];
		}
		else
		{
			[self setPreviewImage:nil];
			[self setTexture:nil];
			[self setTextureData:nil];
		}
		
		[self setTextureIsCompressed:YES];
	}];

Block not called...

	[NSTask launchedTaskWithLaunchPath:@"/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool"
							 arguments:[NSArray arrayWithObjects:
										@"-e",
										@"PVRTC",
										@"--channel-weighting-perceptual",
										compressionLevel,
										@"-f",
										@"PVR",
										@"-o",
										compressedTexturePath,
										@"-p",
										compressedTexturePreviewPath,
										uncompressedImagePath,
										nil]
					 completionHandler:^(int termStatus)
	{
                NSLog(@"Zomg it got called");
		[self setPreviewImage:[[[NSImage alloc] initWithContentsOfFile:compressedTexturePreviewPath] autorelease]];
		[self setTextureData:[NSData dataWithContentsOfFile:compressedTexturePath]];
		
		[self setTextureIsCompressed:YES];
	}];