Yes, I have corrected the second issue. So, the second issue has been solved. But, the first issue still arise although I have made the admin/system/ writable by change the chmod permission to 777. But, it still has not solved the problem yet.
O yes, I forgot about something. After I uploaded all AbanteCart cart files into my hosting server, there is a @LongLink file.
And on my error log, I have found:
2012-09-17 14:14:17 - runtime notice: Declaration of AMenu_Storefront::_buildMenu() should be compatible with that of AMenu::_buildMenu() in <b>/home/u935173008/public_html/core/lib/menu_control_storefront.php</b> on line <b>280</b>
2012-09-17 14:14:17 - runtime notice: Declaration of AAttribute_Manager::getAttributes() should be compatible with that of AAttribute::getAttributes() in <b>/home/u935173008/public_html/core/lib/attribute_manager.php</b> on line <b>548</b>
I hope you can help me with this.
Thanks for your answer.