This sounds like a solid plan, really! JoomlaPack was never designed to run on PHP 5.3 (that's why it fails now), while Akeeba Backup is. Now that all hosts are migrating to PHP 5.3, I expect all JoomlaPack installations to fail. Besides, JoomlaPack had a security flaw and was unpublished forever. Using Akeeba Backup is the only safe option. The indicated solution is:
1. Download all your JoomlaPack archives on your local PC
2. Uninstall JoomlaPack
3. Remove any old backup archives, if they are still present on your site.
4. Install Akeeba Backup
5. Click on the Configuration Wizard button and wait for the wizard to complete. If it hangs for more than 3 minutes, reload the page and wait for it to complete.
6. Take a new backup.
This should be adequate.
Nicholas K. Dionysopoulos
Lead Developer and Director
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