Common Troubleshooting:
- Make sure you have at least 4gb of RAM allocated to Minecraft (In the Technic Launcher Settings). The pack should work with less than that, but I have not tried that yet.
- Make sure you're running Java Version 1.8.0. You usually do not need to change this, but if nothing works: Try setting your Java Version to 1.8.0 in the Technic Launcher Settings.