I'm creating a child theme for thematic (0.9.7.7). Which installs & activates within WP 3.3.1 with no problem - however, as soon as I make any amendment (even to the description/author) to the style.css file within the child theme it all goes wrong, WP then fails to recognise the child theme at all & reverts to Twenty Eleven by default (under 'Appearance' > 'Themes').
I'm using the child sample style.css file that comes supplied with the main theme & have tried editing the file within both Dreamweaver CS5.5 & also within the WP editor. Any edit within DW breaks it, editing within the WP editor initially gave the error 'theme does not exist'. I have just pasted a few styles into the WP editor & that has saved / updated ok, but I'm much more comfortable working within DW.
Is DW doing something to the document type to break it? I'm simply opening, editing & then saving.
I'm working locally on my mac using MAMP.
Any thoughts would be greatly appreciated.