Followed the tutorial [using Dreamweaver CS6/WordPress 3.4 and Twenty Ten] and the first part [child theme] is great. I ran into problems with the second part. After doing all the changes to the php files, Live View would generate a blank page. Trial and error tells me it's the changes to the theme.php file that are causing the problem - if I remove them, Live View works.
The tutorial says the code to change is around line 80 whereas it seems to be around line 180.
Maybe I'm missing something here, any ideas? Maybe something changed in 3.4?