BuddyPress.org

Hi Shaigan,

You have to be specific. What theme upgrade patch did you try?

I’m guessing you mean that you upgraded BuddyPress via the admin dashboard and your theme got deleted.

If you installed your theme @ /wp-content/plugins/buddypress/bp-themes/, then your theme would have been wiped out.
The correct place to put your custom theme is @ /wp-content/themes/.

If you did not backup your filesystem before the upgrade, then your theme is lost.