Hey. So first of all the mod looks great. Only problem for me is I've installed it fine (atleast, i think
) but I keep getting this error called "get_object for texture: pebbles_normal".
Sorry to be a pain but I need a bit of help. 
Try a full redownload and reinstall. I am pretty sure that fixes it.
Could you also run a search in your folder for the texture that is giving you an error? It may be missing due to a broken download, but if its there then the error is caused by something else.
I had this error once and I believe I fixed it by downloading the mod twice, once from each source, and then merging the two downloads into one. Therefore any files that were missing from one were given by the other.
I don't really know much about computers, but I had that error and fixed it. So tell me if that works and if it doesn't I'll try to think of some other things I tried.