Change default MS SQL webadmin

[hlt]

Hi,
I get this error when trying to make the ASP.net enterprice manager the default webadmin.
Error: Set default component failed: defpackagemng failed: Execute websrvmng --add-application --vhost-name=sqladmin(default) --app-name=mssql --scripts=asp;asp_dot_net "--path=C:\inetpub\vhosts\sqladmin\mssql" failed: Unknown error 0x80005008 (COM Error 80005008) at addVirtualDir(sqladmin(default), , mssql, C:\inetpub\vhosts\sqladmin\mssql)

Is there anyone who knows how to fix this?

Thanks