After copying the default world files and munging them, I have a problem where "kam_bldg_bridge1.msh" (and a couple other objects) is defaulting to using "kam1_bldg_lowrez.tga". There's an old post (link) with the same problem, but no solution.

I don't have XSI, but I opened the ".msh" with HxD and verified all the ".tga" references. I have even tried recreating "kam1_bldg_lowrez.tga" using all the high rez textures, but the result doesn't look much better.

Any help would be appreciated. Thanks!

It could be the same issue mentioned in this thread regarding the lowres mesh covering the highres mesh:
https://www.gametoast.com/viewtopic.php?f=64&t=34494