--- trunk/src/io/DumpReader.cpp	2005/04/15 22:04:00	507
+++ trunk/src/io/DumpReader.cpp	2005/09/15 19:17:04	601
@@ -219,6 +219,9 @@ namespace oopse {
   }
   
   void DumpReader::readFrame(int whichFrame) {
+    if (!isScanned_)
+      scanFile();
+        
     int storageLayout = info_->getSnapshotManager()->getStorageLayout();
     
     if (storageLayout & DataStorage::dslPosition) {