Can't paint foliage on an imported landscape

Thank you for the reply.

Sorry if I sound off and I really don’t mean to diss the software, everything I read seems that even the Pros have trouble
with textureing landscape.

Just so yoyr clear on what I did that resulted in the images in those links

I made the heightmap and exported the splatmap etc with it, the map being 4033 and texture, splats etc 4096
imported the heightmap and got it set in the location with height etc all done made a folder structure
\Landscape\Materials extures
Imported the textures to that textures folder and splatmap to the materials folder with the material
I then edit the material and made that setup you see in the link following this tutorial
https://.com/watch?v=K9WTKK9f1b8
the result was that black landscape.

I wondered if it was the splatmap so I hand made one using
the heightmap to select the shading eg: select by colour range selecting the whites copy paste to a layer
then the grey range I wanted copy paste to a layer and lastly the darker shades to a third layer, I then
copy pasted them into layers in the channels tab and removed the red, blue and green channels renaming
the new ones as need be then changed the image to a 16bit RBG and di the material process again in UE4
the result was a cover that was %90 the blue layer (the lowestlayer) and %10 th dirt (the next layer above the lowest)
the mid layer (Green) and high layer (red) did no show at all.

What I’d really like to be able to do is something as simple as make a material:

for use with a splat or weight map

highest layer (Red Splatmap layer)

Blend
Crack_Rock 0.5
Mossy_Rock 0.3

Blend
Dryed_Crass 0.6
Clover_Grass 0.3

Blend
Wet_dirt 0.6
Wet_Sand 0.4
Sand_Shells 0.2

connect those to a layer_blend either weight_blend or Height_Blend using a weight_map or a heightMap
and lastly drop that on the landscape and have it blend nicely giving the higher number prioity with the lower
numbers being patchy random section over the landscape eg: dryed_crass with patch’s of rich green clover here
and there.

Sorry if I make a standard material and try to paint it, I get the brush filling the whole cell in regtangles I have black patch all
over the place where I’m painting, I can’t see the edges where I’m trying to blend itjust a mess so I gave up opting for the splamat
blend method, I’d like to endup with something like this

https://www.dropbox/s/vhwz2nqxut7l32k/Screenshot%202015-07-06%2016.52.18.png?dl=0

Thats an over veiw from WM

I’m using an i7 4770 @3.8Ghz with 32Gb ram running windoz 7 Ultimate on a 500Gb SSD and has a 4Gb GeFroce 970 video card
Do I need to throw this out? I’m sure there would be some running after my truck arms wide open hopeing for a catch

Edit to add the two splatmaps maybe theyer my issue

https://www.dropbox/s/19etb2mc5ezdm43/Splatmap.png?dl=0

https://www.dropbox/s/gxr69qm5ea8et3x/Splatmap.tga?dl=0

I tried two different maps both I got fails