From Paul de Repentigny, "When calling osgdem with argument "--image-ext", the application just

returns after loading the proper ReaderWriter for the given extension."  Fix was to remove the erroenous return.

applications/osgdem/osgdem.cpp

@@ -333,7 +333,6 @@ int main( int argc, char **argv )
         {
             image_ext.insert(0,".");
             dataset->setDestinationImageExtension(image_ext);
-            return 1;
         }
         else
         {