Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email firstname.lastname@example.org.
Install Blank Theme
Rename default theme to out_the_box theme
Rename blank them to default.
With all the renaming being the directories. That will make it easier down the line when copying instructions, these usually specify default/default. There should not need to be any changes needed in admin that way. The only gotcha is if there are files in default that are not in blank…