I've tried to upgrade CS-Cart from 4.10.3.SP1 to 4.10.4 with the upgrade process in Admin.
I got a list of file writing permissions that must be modified, and I set them with chmod.
After this, the upgrade process check permissions again for more than an hour.
Now, I could not access to admin, I get a 404 error, and If I try to access to the store I get this error:
Smarty: Unable to load template tygh 'index.tpl' -->
Please, could it be possible to complete the upgrade manually, or to get back to the previous version?