Hier mal die entsprechenden Stellen:

    <File fileId="62" filename="textures/terrain/wheat_diffuse.png" relativePath="true"/>
    <File fileId="75" filename="shaders/wheatFoliageShader.xml" relativePath="true"/>
    <File fileId="120" filename="shaders/windShader.xml" relativePath="true"/>
    <File fileId="77" filename="shaders/cuttedWheatFoliageShader.xml" relativePath="true"/>
    <File fileId="95" filename="shaders/cultivatorGroundShader.xml" relativePath="true"/>
    <File fileId="39" filename="shaders/dirtmapDetailShader.xml" relativePath="true"/>
    <File fileId="153" filename="models/objects/spring/fountainShader.xml" relativePath="true"/>
    <File fileId="3" filename="shaders/underwaterFogShader.xml" relativePath="true"/>
    <File fileId="2" filename="shaders/oceanShader.xml" relativePath="true"/>
    <File fileId="93" filename="shaders/grassFoliageShader.xml" relativePath="true"/>
    <File fileId="223" filename="models/buildings/Strohkraftwerkv2/scrollUVShader.xml" relativePath="true"/>
    <File fileId="227" filename="models/buildings/Strohkraftwerkv2/particleSystemShader.xml" relativePath="true"/>
    <File fileId="5000" filename="textures/foliage/foliage_manure_diffuse.dds" relativePath="true"/>
    <File fileId="6000" filename="map01/fruitdung_density.png" relativePath="true"/> 
  </Files>

die 2te Zeile von oben beinhaltet die shaders/wheatFoliageShader.xml Stelle die Zahl wäre denach 75

    </Material>
    <Material name="Dach" materialId="664" ambientColor="1 1 1" cosPower="50" specularColor="0.165 0.165 0.165">
      <Texture fileId="221"/>
    </Material>
    <Material name="UnnamedMaterial" materialId="696" diffuseColor="1 1 1 1" ambientColor="1 1 1">
    </Material>
    <Material name="manureMaterial" materialId="5500" ambientColor="1 1 1" customShaderId="75">
     <Texture fileId="5000"/>
     <CustomParameter name="alphaBoostStartEndMax" value="20 42 0.6 0"/>
    </Material>
  </Materials>

als customshaderId die 75 eingetragen

          <FoliageSubLayer name="dryGrass_cut_long" densityMapTypeIndex="6" densityMapChannelOffset="8" numDensityMapChannels="2" materialId="122" cellSize="8" viewDistance="150" terrainOffset="0" objectMask="65520" distanceColors="0.458824 0.431373 0.156863;0.458824 0.431373 0.156863;0.458824 0.431373 0.156863" separateAvailabilityChannel="false" atlasSize="1" plantThreshold="0.5" numBlocksPerUnit="1.2" width="1.8" height="0.8" heightVariance="0.1" horizontalPositionVariance="0.5"/>
          <FoliageSubLayer name="dryGrass_windrow" densityMapTypeIndex="6" densityMapChannelOffset="10" numDensityMapChannels="2" materialId="530" cellSize="8" viewDistance="150" terrainOffset="0" objectMask="65520" distanceColors="0.458824 0.431373 0.156863;0.458824 0.431373 0.156863;0.458824 0.431373 0.156863" separateAvailabilityChannel="false" atlasSize="1" plantThreshold="0.5" numBlocksPerUnit="1.2" width="1.8" height="1.3" heightVariance="0.1" horizontalPositionVariance="0.5"/>
        </FoliageMultiLayer>
          <FoliageMultiLayer densityMapId="6000" numChannels="12" numTypeIndexChannels="4" useVertexBufferPool="true">
          <FoliageSubLayer name="manure" densityMapTypeIndex="93" densityMapChannelOffset="8" numDensityMapChannels="2" materialId="5500" cellSize="8" viewDistance="80" terrainOffset="0" objectMask="65520" distanceColors="0.313726 0.203922 0.129412;0.313726 0.203922 0.129412;0.313726 0.203922 0.129412" separateAvailabilityChannel="false" atlasSize="1" plantThreshold="0.5" numBlocksPerUnit="2" width="2" height="0.15" heightVariance="0.1" horizontalPositionVariance="0.5"/>
        </FoliageMultiLayer>
          <FoliageMultiLayer densityMapId="91" numChannels="1" numTypeIndexChannels="0">
          <FoliageSubLayer name="shortGrass" numDensityMapChannels="1" materialId="577" cellSize="8" viewDistance="100" terrainOffset="0" objectMask="65520" atlasSize="4" plantThreshold="0.5" numBlocksPerUnit="1.8" width="1" height="0.5" heightVariance="0.05" horizontalPositionVariance="1.5"/>
        </FoliageMultiLayer>
       <DetailLayer name="terrainDetail" densityMapId="94" numDensityMapChannels="4" materialId="192" densityMapShaderName="blendMap" cellSize="8" viewDistance="200" terrainOffset="0.04" objectMask="65520" distanceColors="0.576471 0.486275 0.34902;0.34902 0.301961 0.27451"/>
      </Layers>

und dann noch die Multilayer