[Plugin: Buddypress 2.2.0] Error when trying to activate buddypress

Hello guys,

help me please.

when i try to activate buddpress plugin, it always return error like this.

Problem loading page

The connection was reset
The connection to the server was reset while the page was loading.
The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

help please. sorry for my bad english.