Difficulty in installing Theme Business.

I am having great difficulty in installing Theme Business.
It is hosted in Bluehost, with WordPress 3.2.1 and BuddyPress 1.5.1
I copied this theme to my themes directory: / public_html / mysite / wp-content / themes /
After that, I went to the Dashboard panel to activate it.
After activating it, the site broke. I could not get more. Neither the site nor the dashboard.
I returned the old theme.
I uninstalled and installed again.
By clicking preview, the screen appears white.
What am I doing wrong?
Thank you