all exported folder size are 0 Kb

I have installed drupal 6.25 and enable 2 languages, Pathauto module installed.
I have tested both 6.x-2.x-dev and 6.x-2.0-alpha5 version and totally not working as expected.
1. All the index.html files are empty, so the total export folder size is 0 Kb.
2. The /admin/.... folders are created in spite of the fact I checked "Render as anonymous". also I try another time and unchecked the "Render as anonymous" but it does not affect.
3. Also the home page is empty.
4. I have tried the 6.x-2.0-alpha1 version before and it was functioning.

Note: I install drupal on localhost (http://localhost/something/drupal/) and using xamp on windows. I uninstall pathauto module but problem persists.