That sounds strange, 2003 sever does not have the aspnet user... Which version are you trying to install? And are you using the SDK installation, or the manager?
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Lars Øyvind
It is the EPiServer Installation manager from the latest R2 release.
If you by Clean mean a new web site then no. I tried to install it as a virtual directory under an existing web site by providing an application name.
I'm not sure exactly what you mean by manualaspnet_isapi.dll. I have checked the "ISAPI filters" tab on the website and that was empty and if I click the configuration button on the web site there is no such dll in the Application extensions list.
Did you resolve this? I have the same problem with a Windows 2003 Server, and I get this error after I have put all the credentials into the Installation Manager with R2 and start to install a web site.
This looks similar to the problem I had, see
http://world.episerver.com/Forum/Pages/Thread.aspx?id=25564&epslanguage=en
I am trying to install a new site on our Windows 2003 server machine but every try gives me the error message "Error - ASPNET is not a valid user or group".
This seems very strange since this is a Windows 2003 machine which doesnt use the ASPNET account. Does anyone have any idea why this is occuring?