Changed debug comments to output to notify level and tweaked the handling of the .terrain file.

src/osgPlugins/osgTerrain/ReaderWriterOsgTerrain.cpp

@@ -45,7 +45,7 @@ class ReaderWriterTerrain : public osgDB::ReaderWriter
                     osg::notify(osg::NOTICE)<<"["<<itr->first<<"] = "<<"["<<itr->second<<"]"<<std::endl;
                 }
 #else
-                std::istringstream fin(file);
+                std::istringstream fin(osgDB::getNameLessExtension(file));
                 if (fin) return readNode(fin,opt);
 #endif
                 return 0;

src/osgTerrain/GeometryTechnique.cpp

@@ -145,6 +145,8 @@ Locator* GeometryTechnique::computeMasterLocator()
 
 osg::Vec3d GeometryTechnique::computeCenterModel(Locator* masterLocator)
 {
+    if (!masterLocator) return osg::Vec3d(0.0,0.0,0.0);
+
     BufferData& buffer = getWriteBuffer();
     
     osgTerrain::Layer* elevationLayer = _terrain->getElevationLayer();