Im also having trouble

I originally came onto this mod for the same reason, looking to make small edits to world map roads. They do not yet appear to have a world map tile editor in place in full yet, so it cannot be done at present with this Mod.

HOWEVER - I believe you could use the Roads of the Rim or w/e it is mod combined with Dev mode to basically find a planet you like, use the Roads of the rim to build new roads instantly via Dev mode or what have you and then save the planet. Start your new game with your saved planet. Best I can think of for work-around.

That's unfortunate. Spawning roads at startup is literally the ONLY thing I wanted to do.

i recently updated worldedit for 1.6, allowing to build road on startup https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3590928058... road is also the main reason i wanted to update the mod