Re: System setup required after upgrade 1.2.7 to 1.3.9h
The degree of difficulty in upgrading a cart really has little to do with the number of products, customers, etc.
If the cart was built with a proper foundation (custom template), one can upgrade a cart to a new version in a few hours. That's because most PROPER customization is not touched during upgrade.
A few mods touch what we call "Core Files" and will have their changes overwritten on upgrade. Personally, I think there should be a new item in the Free Software Add Ons that identifies if a mod changes core files just as it tells you if the mod is PHP 5.3 compatible.
All that said, upgrading from 1.2 to 1.3 is really a major jump and should probably be done with a complete new installation. Starting fresh with proper customization with make later upgrades enormously easier.
Upgrading to 1.3.9 from 1.3.8 is really no big deal IF the foundation of 1.3.8 was done correctly on install. That's one of the reasons the team advises against automated installs like Fantastico.
Bottom line is... Follow the 3 easy steps at http://tutorials.zen-cart.com/index.php?article=108 and you will have an upgraded cart in little time. DO NOT SKIP ANY PART OF STEP 1.
Most of the upgrade nightmares are caused from not following the steps line by line. Shortcuts to save minutes cost hours on upgrade.
Did you read the posting tips?!?