If I helped you, dont forget to click the thanks arrow 5 Jan 26, 2017. JIRA Helper in, Chat moderator in Minecraft Forums, Twitch/Mixer mod.
Pack will not launch and will simply re-open the launcher with an error message.Use the 3.1.2 (Hotfix 1) release of the pack and attempt to launch while using the vanilla launcher.
Possible Solution Steps to Reproduce (for bugs) It crashes immediately instead of even starting to load the game. Native Launcher Jar Launcher To change the launcher used: go to file - settings, scroll down to minecraft on the left and select. When I attempt to launch the pack, from the vanilla Minecraft launcher with the current version of SevTech selected, it crashes immediately and re-opens the launcher. The twitch desktop app has 2 launchers it can use, by default install it should be the newer 'native launcher' and there is the old jar launcher (1.6.84).