Why can not Create a new Site,could not find wp-admin

Dear Sir,

Why can not Create a new Site,could not find wp-admin

I try to create a new site,at my main site and network page

“There was a problem, please correct the form below and try again.”

But not indicated where need be correct.

I see there is two site name, may be is error.

Create a Site Site Directory

There was a problem, please correct the form below and try again.

Privacy:

I would like my site to appear in search engines, and in public listings around this network.

Your address will be Acup.ACUPUNCTURIST.US

Your address will be Acup.ACUPUNCTURIST.US

http://24hws.com/community/buddypress/create/

Then I clik network admin, also have error.

http://wp-admin/network/

Oops! Google Chrome could not find wp-admin

and I tried, when I add new site to all other domains, the new sites can not created,

only go to the main site’s home page. Why?

How to fix it.

Thanks!