Seems you're Darthmod 'additional units mod' isn't in the right place, or is missing. Check it isn't in the data folder already, alongside the vanilla ones etc. If it's truly missing, try redownloading the mod. Look yourself manually in data/dme/packs to see if it's there, and manually move it, remember to edit the script to enable it. You won't get a crash if you don't enable a pack that's in data btw, it'll just do nothing. If all else fails, you're not missing a whole lot if you simply disable AUM in the launcher
Edit: is there a bat file missing you need? I wouldn't know as I play on Mac and install most of the packs manually. Think the bat files 'tell' the launcher what file to move and to where. Should be one for every individual pack.