bbPress theme edubb 1.0.5 report as broken

After following the instruction to place the folder bb-edubb-1.0.5 inside bbp-themes, when I go to activate the theme, WordPress says:

Broken Themes
The following themes are installed but incomplete. Themes must have a stylesheet and a template.
bb-edubb-1.0.5 Stylesheet is missing.

Please advise.

Thanks,
Walt