Since this mod has been reported working in 1.6 I added it to the No Version Warning-mod
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2599504692

I fixed the problem, thanks again for reporting it.

no problem, it's legit a fascinating error lol, it might be the only xml error you can fix in rimworld without exiting the game. I removed the duplication while the game was running and it stopped throwing the error.

Oh, okay, I'll fix it now. Thank you for reporting this

this mod has a duplicated package id in the about file, it throws harmless errors but they are annoying and clog up the logs. it does this even if the mod is not currently enabled too. If you use this, or if the author sees this you can just remove one of the package ids in the "about.xml" in the mod files.

all you need to remove is *ONE* of these, does not matter which, just make sure one of them remain. <packageId>ve.architect.icons</packageId>