can't add domain into plesk

[xomri]

after a major crush in my server I've re-install windows and plesk
when restoring all domains into plesk again, one of the domain report an error
but now when I try to create a new domain and hosting plan into plesk all I get is a messge:
Error: Domain [domain name] already exists

I don't see this domain on the domain list and I don't know how to create it again
can anybody help?
(I'm using plesk 8.1 for windows)