yes but textures are apart from collisions so if he falls down it means that the interior instance of studio main located in one of the strbig wpls of the imgs(i dont know which one) failed for some reason and i need more details to find out why.
other suggestion: did you edited embeded textures? i mean it wasnt from the wtd isnt it?
so it would be better that you download OPEN IV program that allows you to do the same thing but you have to export it in open formats,the textures will be in a folder called with the same name as the model,edit them and then reimport them(isnt so easier but is more effective) so i recommend you to download OPEN IV, dude.
spark iv is a good tool but the texture editing perfomance of the embeded textures inside model are not supported very well,sometimes textures arent even saved for some reason.(that happened to me when i was trying to edit the freeway signs)

OK , i just realized that the studio2main is the brucie's house.ok.then you have to know that brucie's house is only rendered in the cutscenes when mission so it is not an interior instance like your save house, it is only a scene to create the story of GTA IV(i was using trainer "go trought doors" feature to find it out). like i said it is only rendered in cutscenes so thats may be your problem with that "interior".doesnt even exist.

examples of cutscene interiors: faustin's mansion, packie's house, elizabeta's house....
This post has been edited by aacclapd on Monday, Jul 2 2012, 23:58