Hi
If i disactivated Sh404sef the system work
This does NOT mean the problem is in sh404SEF.
In your case, it's a bug in your whishlist extension, a very common one: they are using a
relative URL to call their script.
The bug is in the file: /templates/t3_blank/js/linescript.js, on line 232:
function addToWishlists(product_id) {
jQuery('#system_view_overlay').show();
jQuery('.AjaxPreloaderC').show();
jQuery.ajax({
url: 'index.php?option=com_wishlists&task=add',
type: 'post',
data: 'product_id=' + product_id,
dataType: 'json',
success: function(json){
Note that you have the same bug also on line 206 of this same file (in the removeCompare function) and on line 272 (in the removeWishlists function).
Normally, all of those should be prefixed with the current site URL. A quick fix is simply to add a / at the beginning:
url: '/index.php?option=com_wishlists&task=add',
Of course, if this is coming from an external developer, you should report the problem to them.
And once again: this is a bug in the extension. It does work with Joomla SEF, but this is because of a problem in Joomla router, which should also give a 404 in this case.
Rgds
