Hi Vaso,
I have this same scenario on my current contract.
We started with the a new workspace created under the root PWA site
We put the Project Details webpart on the home page of each workspace.
(as this point we also get the message you get above)
We saved the new site as a template in sharepoint (as normal).
Exported it (.stp file)
Then registered this template into Sharepoint. (using STSADM.EXE)
Then set this new template as the default of each workspace. (server settings)
We have all workspaces in the same site collection under
http://projectserver/pwa/... (which is different to you)
But after publishing a new project and creating a new site with this
template, opening the workspace displays the project details view of the
associated plan automatically.
FYI: if I look at the site using the server it also displays the error
message you got, but this is because we have not got the PWA ActiveX controls
installed on the server.
Don't know if this info helps you.
Our frustration is that when we give all users read-only access to a
project's workspace (adding NT Authority\Authenticated Users as Reader) then
these users get an error on opening the home page "An Unexpected Error has
Occured" because they don't have the associated PS2007 user account!
Ideally we'd restrict when the Project Details webpart is displayed by using
the Target Audiences field in the Webpart properties, but this only allows
group names and of course PS2007 synch's users into the workspace by
individual name rather than putting them into a group. Pook!
If you know a way round this one, please let me know.
best wishes
MLCS