Frontend just redirects to root

[Xoda]

I can use the backoffice but the frontoffice redirects to the site root.

At www.retrocamera.net is a Wordpress-blog
I have installed Prestashop in www.retrocamera.net/shop/
Deleted install-folder, renamed admin-folder
Backoffice works but not frontoffice.

I have tried deleting .htaccess in both prestashop and the roots Wordpress, enable/deactivated friendly urls, set the config.inc.php to show errors. I've tried with prestashop theme and my own and it will not work.

I have tried Firefox, Opera, Safari.

I have had Prestashop at the domain before but now I made a clean install.

Any ideas (mine are out, and I'm quite frustrated at the moment)??

[Xoda]

Ok, 404 and productpages seems to work now but not the home-page. Since I have the shop in a subfolder I've added /shop/ om the RewriteRules in .htaccess... it looks like this. Anything more to add there?

# URL rewriting module activation
RewriteEngine on

# URL rewriting rules
RewriteRule ^([a-zA-Z0-9-]*)/([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /shop/product.php?id_product=$2$4 [L,E]
RewriteRule ^([0-9]+)\-([a-zA-Z0-9-]*)\.html(.*)$ /shop/product.php?id_product=$1$3 [L,E]
RewriteRule ^([0-9]+)\-([a-zA-Z0-9-]*)(.*)$ /shop/category.php?id_category=$1 [QSA,L,E]
RewriteRule ^content/([0-9]+)\-([a-zA-Z0-9-]*)(.*)$ /shop/cms.php?id_cms=$1 [QSA,L,E]
RewriteRule ^([0-9]+)__([a-zA-Z0-9-]*)(.*)$ /shop/supplier.php?id_supplier=$1$3 [QSA,L,E]
RewriteRule ^([0-9]+)_([a-zA-Z0-9-]*)(.*)$ /shop/manufacturer.php?id_manufacturer=$1$3 [QSA,L,E]

# Catch 404 errors
ErrorDocument 404 /shop/404.php

[Xoda]

Gaaaah, everyting but the home-page works! And I'm stuck.

[Xoda]

Bah, I'll try a reinstall in a subdomain instead.

[Xoda]

Ok, now I got it working with a fresh install in a subdomain.

Guess it could have been a conflict between the Wordpress .htaccess and Prestashop. didn't find anything obvious though. If anyone have a likely answer it would be nice to know for future projects.