Hi ceckin
I've just seen your post which made me download and look at this theme to see if the logo.png was missing. I see there are quite a few files missing from the package which makes me think why? hmmm.. Maybe back in 2009 when i was creating my earlier themes I just intended the themes files here to be merged with the 'original'
Legacy Default theme. To be honest, I can't remember but you could always try that.
But in it's current state, just using the Blackosx_BIG_theme will not work as you have found out due to missing files.
I'll try to make a new package with a complete set of files in the future for this.
Regards
blackosx