Magento Template change error

• Your design change for the specified store intersects with another one, please specify another date range. Error

1. Go to phpmyadmin then click on your magento database on the left.
2. When it brings up all of the fields in the database click on design_change.
3. Now in the center of the screen you will see under options that table in the database, click on the pencil to edit the database.
4. Now where you see the field design all the way across to the left of that you should see something like “default/default”e changing the name. 
5. Don’t know whats causing the date issue but this is an easy workaround If you change that to “default/blue” you can get the blue skin to work. Just press “go” whenever you are don