windows 2003 server, I have upgraded to the version 6.5.2 and from then on I cannot create any new domain he/she appears me this error:

Can't remove the user (grupoinfamar) from the 'TelnetClients' group: No se ha encontrado el nombre de grupo.

at execute command add(RunTime::UserMng::start line 225)
at execute C:\ARCHIV~1\SWsoft\Plesk/admin/bin/usermng.exe "add" "grupoinfamar" "C:/inetpub/vhosts/grupoinfamark.com"(RunTime::RunAsUser::run line 266)
Execute file name: C:\ARCHIV~1\SWsoft\Plesk\admin\bin\usermng.exe


please I need urgent help, I cannot create new domains

thank you, a greeting

ANYONE IDEA???????