Cannot compile Dynamics AX classes, and some compilation problems.

Hello.

I cannot compile several of the system classes, and I would like check if something is missing.

InventDimASPWebControlAdapter::classDeclaration.

Microsoft.Dynamics.Framework.Portal  is not known - I cannot see that package (portal).

BTW - Is there any best practice way to do export/import to a server, where there is one instance of AOS file, but 3 servers pointed to same AOS. Also there are Citrix Servers.

Should I do compilation on any of the three servers?

Should I do compilation on the Citrix side.

Should I shut down Citrix?

Should I import the XPO, when only one AOS server service is up?

Is it best practice to compile with no error & warnings, and what if the compilation  doesn't work?

(I have seen strange behaviours, when I do compile forwords, restarting the AOSs, and nevertheless - the users get exceptions, so I needed compile several objects manually).

etc ...

Thanks :)