Index: OpenSceneGraph/trunk/src/osgDB/FileNameUtils.cpp
===================================================================
--- OpenSceneGraph/trunk/src/osgDB/FileNameUtils.cpp (revision 9884)
+++ OpenSceneGraph/trunk/src/osgDB/FileNameUtils.cpp (revision 10818)
@@ -251,4 +251,8 @@
 #endif
 
+    if(left.empty())
+    {
+        return(right);
+    }
     char lastChar = left[left.size() - 1];