Index: resource.cpp
===================================================================
--- resource.cpp	(revision 34095)
+++ resource.cpp	(working copy)
@@ -218,9 +218,12 @@
 		// 'else' case would mean here overwriting an existing file entry in the map without parent.
 		// We don't support that though, so one can overwrite files from archives by putting
 		// them in the gamepath.
+		
+		iter = _map.find(i->filename); // Not strictly necessary but simple : TODO : Specific cases
+		if (iter != _map.end()) 
+			detectFileType(i->filename, &iter->_value);
 	}
 
-	detectFileTypes();
 	return true;
 }