The FTB Forum is now read-only, and is here as an archive.
To participate in our community discussions, please join our Discord! https://ftb.team/discord
Follow this step-by-step guide exactly to install the launcher and Java. Once done post a new console log in debug mode if you still are experiencing problems.
There are issues with the FTB Lite pack (1.2.2) atleast, i myself get a black screen like many tickets and other topics write. Haven't found a workaround yet (besides going back to an older version)