@sneaky Good news, I was able to fix the mod. It should work properly for all of your players now.

It broke because after v12.0, tabletop sim required that all links have " http://www" at the beginning instead of just "www". When I originally put this together, those walls did not have that. He has since updated his mod but that doesn't fix old saves. The workaround is to edit the .json for your save file. I'm posting a link to the mod below which has the steps in there in case you have any other mods/maps that are broken because of this. Cheers! I hope you and your players enjoy crawling through this dungeon.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=375338382&searchtext=dungeon+modular

PS: I'd love some to see some pics of how you wind up populating and using this map! To be honest I haven't come up with any ideas yet myself!

All seems to load just fine, .obj's will download and open, texture images display normally, TTS just wont pull them I guess

So if you take that link in the "model/mesh" section and paste it into your browser, what happens?

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1743890748

Screenshot of what I see, with lighting increased to make it easier to see, I'm not a 100% how custom models work in TTS, so I'm not really sure where the issue is originating from. This issue wasn't happening for everyone I was playing with, just me and one other. It also seems to be consistant with me, in both single and multiplayer.
(It's a great map either way!)

@sneaky, I updated the mod, hopefully it's more usable for you now. I think all of the walls are in proper working order so I'm not sure about how to specifically fix your problem.

Certain people I'm playing with, including myself, are getting a "www model error cannot connect to destination host" error when these assets are used on a server, the big thing being the walls that EVERYONE with the issue cannot see.

Unsure if this is an issue with tabletop, the mod, or both.