Unable to Download

I tried downloading the Torrent file on the website and it didnt work. I downloaded both files and tried to install the setup and It says it couldnt find the file and asks if I downloaded it when I obviously did. I tried every other file as well and those didnt work either.

Is the installer in the same location as the .7z file?

It was before I tried moving it in the same folder but it wont let me move the trackers file

You dont need to move the trackers file.

Use the tracker (.torrent) file in a program such as uTorrent, or bitTorrent to download the files. Using that program will automatically create a folder in your default download directory called ‘BlackMesa’ Inside that folder should be 3 files.

Open the one that ends in .exe and OK through the installer until it installs. Upon clicking ‘Finish’ (providing you have ‘Run BMS’ checked) it will automatically run BMS.

On a side note: are you trying to do this in windows?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.