If you get one of the following errors:
./install.sh: line 225: ./directadmin: cannot execute binary file ./install.sh: line 228: ./directadmin: cannot execute binary file
it will mean that the OS version set in your license file does not match the OS you're using. To get the correct binaries, you'll need to email us your license ID number and the OS version that you are using (including correct number of “bits”, 32 or 64) so we can set the license for you. Then you can install again.