If you get any errors at this point, either you didn't run as administrator, you CAN'T run as administrator, or you have different mod/workshop folders and need to adjust the script for your setup.

It only uses 1 CPU core for server (in singleplayer too). On the next pop-up window, click on the 'Local Files' tab across the top, and then on 'Browse. Starbound (by itself, even without any mods) is very poorly optimized. To find where Steam stores the mods it just downloaded, please do the following: Right-click on 'Starbound' in your game library, and the menu shown below will pop up.

After SWEL finishes its clever boot sequence, select option #1. Preparing the Mods to Upload to the Server.

If you have disabled Windows UAC settings, you likely won't need to grant admin and can just double-click away.

Right-click on SWEL.bat, the Starbound Workshop Easy Linker script, and 'Run As Administrator'.

Use the tools you have and your brain to find the incompatibility.

If the stable game crashes during boot after installing mods, you have an incompatibility. As someone with 250+ mods, I scowered the internet for solutions to the occasional fps drops that you will run into when running a modded Starbound.

Occasionally, Steam will (for reasons beyond imagination) not distribute mods without a restart.

If the mods do not show up in the in-game list, restart Steam.

Start Starbound and click the gear icon found in the bottom right corner (if the main menu is not modded) to ensure that the mods have installed and that the stable game boots properly with the selected mods.

Go through the Starbound workshop and install any mods that you want in Unstable.

How to mod starbound