I renamed the correct file for the source unpack and the green text came up in the console, but my only question is, where are the .dem files kept. I can't seem to find them.

Source Unpack/portal/[year.month.day.time]/

in that folder

its a weird folder with a bunch of numbers, cant miss it

I don't see any folder with numbers.

Are you starting your runs with the speedrun_start command?

Everytime I try to do that, portal crashes