This is probably an error in the extension that it happened in the first place, but the issue is that the pages are set to be derived from a theme and the theme is set to the page itself creating an endless loop.
For instance on page1.php line 9 it shouldn't have "page1.php" it should have "test.dwt.php" specified as the theme page... same issue on the other three pages. This may be an issue with the create page from theme command of some sort.