Tekkit classic & Voltz not working

[Jerzukekka]

I just downloaded the launcher and Tekkit Classic and Voltz won't launch.

I tested installing every other modpack and they all work, but whenever I try to launch Classic or Voltz it gives me this report:

 

1. Technic Launcher Error Report:
2. ( Please submit this report to https://github.com/TechnicPack/TechnicLauncher/issues )
3.     Launcher Build: 439
4.  
5.     Selected Pack: Voltz
6. Stack Trace:
7.     Exception: RuntimeException
8.     Message: Minecraft not installed for this pack: InstalledPack{info=SolderPackInfo{name='voltz', display_name='Voltz', url='http://www.technicpack.net/voltz' icon_md5='820ad79798bf8fce3317ad7bb6302384', logo_md5='57bab00b470b738898084b29b541a3e7', background_md5='e9111ee2909af2bc0fa78a50812b1c0a', recommended='2.0.4', latest='v3.0.0c', builds=[1.0.13, 1.0.12, 1.0.11, 1.0.10, 1.0.9, 1.0.8, 1.0.7, 1.0.6, 1.0.5, 1.0.4, 1.1.2, 1.1.3, 1.1.4, 2.0.1, 2.0.2, 2.0.4, 3.0.0, 3.0.0b, v3.0.0c], solder=net.technicpack.launchercore.restful.solder.Solder@18414fa}, name='voltz', platform=false, build='recommended', directory='%MODPACKS%voltz'}
9.     Trace:
10.         net.technicpack.launchercore.launch.MinecraftLauncher.buildClassPath(MinecraftLauncher.java:199)
11.         net.technicpack.launchercore.launch.MinecraftLauncher.buildCommands(MinecraftLauncher.java:107)
12.         net.technicpack.launchercore.launch.MinecraftLauncher.launch(MinecraftLauncher.java:56)
13.         org.spoutcraft.launcher.InstallThread.run(InstallThread.java:74)
14.  
15. System Information:
16.     Operating System: Windows 7
17.     Operating System Version: 6.1
18.     Operating System Architecture: x86
19.     Java version: 1.7.0_55 32 bit
20.     Total Memory: 55 MB
21.     Max Memory: 247 MB
22.     Memory Free: 24 MB
23.     CPU Cores: 4

[Munaus]

This is the old forum that is not used anymore. Please use the Tracker for posting issues.