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I'm trying to use jUpgrade to migrate a Joomla 1.5.26 installation to 2.5.

It is failing at:

Upgrading progress...
Migrating undefined

It never proceeds from here.

Checking the error log in /administrator, I see:

PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'pdo_mysql' already loaded in Unknown on line 0

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If you don't receive an answer to your Joomla question here, you might ask it over at this StackExchange Area51 site: area51.stackexchange.com/proposals/34294/joomla –  dan Jun 15 '13 at 5:37
    
Thanks @dan, but the questions there are locked it seems. –  Steve Jun 15 '13 at 6:46
    
Looks like the Joomla site is in Beta now, let me know if you'd like this migrated over there. –  dan Oct 18 at 3:18

1 Answer 1

The process of migrating Joomla 1.5 to 2.5 is often a complex process, depending on what extensions you have on your current website. It's seldom a one-click process.

First of all, make sure you have a complete backup of your site (I recommend Akeeba Backup)

There are several ways to do the migration, and several tools that claim to be a one-click solution. As you see, that doesn't always turn out to be true. I'm going to list a couple of alternatives, but first keep in mind the following:

  1. Your current template will probably not work with Joomla 2.5. You'll have to:
    • modify it to make it compatible
    • download a new version from the template provider (if available)
    • use a different template
  2. You'll have to look for an upgraded version of most of your extensions.
  3. Some of your extensions might not be available for Joomla 2.5, and you'll have to look for an alternative extension with similar functionality.

(on a side note: Joomla 2.5 has a planned End Of Life in a few months, you might want to consider upgrading to Joomla 3.)

Option 1: Build a new site

Taking into account the points above, you might be better of creating a completely new site. Start with a clean Joomla 2.5 (or 3) installation. Then use J2XML to transfer your articles (with images), categories, menus and users. This will give you a kickstart, and the advantage is that you have a very clean Joomla installation. Install a new template and configure the site as needed.

Option 2: Try other migration tools

If jUpgrade fails, there's a list of different tools for Joomla migration at JED. You might have better luck with another migration tool. As long as you work on a copy of your site, there's nothing wrong with testing different solutions (except it might be time consuming).

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