Until yesterday, the URLs for my live magento store were :
I had also another install of magento only for tests in the following subfolder. This is a test store wich a different test database from live store :
I worked fine.
I tried to install multiple websites on my test store : http://www.mymagento.com/magento1.1.8
So after configurating it, I copied its index.php and .htaccess to the subdomain :
I worked almost fine, but I can’t understand why, now the SLL pages of https://www.mymagento.com redirect to :
I checked out the database, which is ok for secure base url
I took a look in .htaccess and index.php, but I can’t find why !
The only temporary solution is to disable secure urls on my live store.
thanks to all