I've seen mention of having to name info.txt to addon.txt or something like that for the new Gmod/ULX/ULib addons.
Find the posts here regarding renaming. Might be on 2nd or 3rd to last page of our GM13 ULX beta discussion (not the news, but 13+ pages of discussion leading up to it)
I forget if its addon or addons.txt that info.txt should be named to.
Once that's done, show startup errors from server console.
As for how to download with no Mac SVN client, go to
https://github.com/Nayruden/UlyssesSelect Ulib folder, then near top right of listing, 'downloads', then 'download as zip' (or tar.gz if you prefer, think Mac may understand it, but zip is most popular.
Then go back and do same for ULX folder.
Then extract to your addons folder and rename.