If you're game wont launch try to dedicate more RAM to the Technic launcher (Launcher Options -> Java Settings -> Memory). We recommend about 4GB minimum for our modpacks. Although don't dedicate too much RAM to it, else your computer won't have any left. If the maximum is 1GB for you to set you probably run 32-Bit Java. 64-Bit Version of Java 8+ is needed to run our modpacks.
Feel free to ask us in our discord if you run into any problems. If we can't help you the guys over in the technic discord might be able to help you aswell.
Hex Tech Help:
The modpack is made to be played on our server. Hence the gameplay in singleplayer might be not as optimized as on the official server. If you want to play in singleplayer we suggest to use the "BoP Hexlands" worldtype. Changed up recipes are in for both singleplayer and multiplayer! Guidance can be found in our discord!
Q: Are there other servers? A: No there are no other server at this point.
Q: Is there a server download for Hex Tech? A: No there isn't a server download available to this point. If you want to make on of you own feel free to do so!
Q: Why can't I go into the server selection page? A: The Custom Main Menu mod directs you directly to our server. If you don't want that just hit "Servers" in the main menu.
Q: Am I allowed to create my own server for the modpack? A: Yes as long its non profit and abides the minecraft EULA! Please don't advertise it on our discord!