I need help.

I want to make a sci-fi mod, but I need to delete EVERYTHING on the tech tree, but I keep getting errors.

How do I delete all technologies, and which files do I need to delete the techs from?:confused:

You would need to go through mostly every file in the XML that might even possibly realte to the techs delete it their and in the tech infos and art defines. This is highly difficult and will take some time to do correctly.