Re : All good but the tiki-index.php
Is it only tiki-index.php or also tiki-index.pgp?page=one_page?
If it is only the first one, check your default tikiwki homepage .. a lot of palce to define it : admin-> general and admin->group ...
Perhaps your homepage has a wiki error (example 2 ~np without the ~/np...)
To avoid tikiparsing - i think - you can try directly tiki-editpage.php?page=your_homepage