Old issue with spacefox, the raws were broken sometime last summer, by the creator of spacefox... I don't think anyone went back and checked to see if the raws were updated... If you wanted to update them manually, I would suggest finding the folder labeled spacefox in the masterworkdwarffortress folder, find the raws inside of that. take a look at the current version of spacefox(its probably somewhere over in the tilset/graphics forum). then replace each and every [TILE:x:x:x] line in the raws, with the version in the current spacefox... Its probably somewhere around 200 lines. I wish I had an easier way to get it done. great thing is since you only have an issue with the "inorganic_stone" then that should be the only file you fix... If you get that far, copy and paste it here. Otherwise its on my list of things that need to get done, but a low priority, if I get to done with the stuff I've promised, I'll look into it next. not sure but mifki may have a version of this coming out with twbt next, i can't remember if its this one, obsidian, or some other file hes making examples of for twbt - next.