Um, I really don't know how this works, so I'm just going to post this error report. It's from the startup of the launcher to the point it closes after the ForgeModLoader thing did its work. Oh, and the modpack was FTB Unleashed.
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] JGoogleAnalyticsTracker$2.run:483: AnalyticsBackgroundThread started
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:191: FTBLaunch starting up (version 1.3.4)
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:192: Java version: 1.7.0_45
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:193: Java vendor: Oracle Corporation
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:194: Java home: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:195: Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:197: Java vm: Java HotSpot(TM) 64-Bit Server VM version: 24.45-b08 by Oracle Corporation
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:198: OS: x86_64 Mac OS X 10.7.5
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:199: Launcher Install Dir: /Users/kis/Library/Application Support
2/4/14 2:37:12.064 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:200: System memory: 1144M free, 4096M total
2/4/14 2:37:12.292 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LocaleUpdater.run:67: [i18n] Checking for updates ...
2/4/14 2:37:12.295 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] I18N.setLocale:142: [i18n] enUS English language file loaded!
2/4/14 2:37:12.869 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.869 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.870 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.870 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:19.174 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:19.175 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:19.175 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:19 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:19.175 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:19 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:25.491 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:26.000 PM kernel: IOSurface: buffer allocation size is zero
2/4/14 2:37:26.256 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:26.256 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:26.256 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:26 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:26.257 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:26 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:29.000 PM kernel: IOSurface: buffer allocation size is zero
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] JGoogleAnalyticsTracker$2.run:483: AnalyticsBackgroundThread started
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:191: FTBLaunch starting up (version 1.3.4)
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:192: Java version: 1.7.0_45
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:193: Java vendor: Oracle Corporation
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:194: Java home: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
2/4/14 2:37:12.060 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:195: Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:197: Java vm: Java HotSpot(TM) 64-Bit Server VM version: 24.45-b08 by Oracle Corporation
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:198: OS: x86_64 Mac OS X 10.7.5
2/4/14 2:37:12.061 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:199: Launcher Install Dir: /Users/kis/Library/Application Support
2/4/14 2:37:12.064 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LaunchFrame.main:200: System memory: 1144M free, 4096M total
2/4/14 2:37:12.292 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] LocaleUpdater.run:67: [i18n] Checking for updates ...
2/4/14 2:37:12.295 PM [0x0-0x5ad5ad].com.apple.JarLauncher: [14:37:12] [INFO] I18N.setLocale:142: [i18n] enUS English language file loaded!
2/4/14 2:37:12.869 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.869 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.869 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:12.870 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:12.870 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:12 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.649 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:13.650 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:13 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:19.174 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:19.175 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:19.175 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:19 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:19.175 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:19 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:25.491 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:25.492 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:26.000 PM kernel: IOSurface: buffer allocation size is zero
2/4/14 2:37:26.256 PM java: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:26.256 PM java: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:26.256 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:26 Dark-Brotherhood.local java[51597] <Error>: CGContextGetCTM: invalid context 0x0
2/4/14 2:37:26.257 PM [0x0-0x5ad5ad].com.apple.JarLauncher: Feb 4 14:37:26 Dark-Brotherhood.local java[51597] <Error>: CGContextSetBaseCTM: invalid context 0x0
2/4/14 2:37:29.000 PM kernel: IOSurface: buffer allocation size is zero