I built two models in EASE 4.0 and used the command: "Combine Project". It combined the projects, but I can no longer delete items in the project because it says that they are appended to the old file. What does that mean and how can I solve it?

EASE 4.0: This message usually occurs if items to be deleted are still referenced to from within an object. It can be one of the following:

My problem is in painting the conic 3-6-9 dB loudspeaker coverage patterns on the seating area. I get the magenta line indicating the aiming angle, but I am not able to turn on the patterns even though the program says the beam patterns are on.

If the Options are shoing 3,6,9 dB Cones ON and the magenta line is visible, check also the currently used frequency under Options, maybe the current band is not valid. Otherwise you should also check if there are really cones with values different from 0° and 180° using the Speakerbase.

What is the recommended way to add or change a manufacturer's loudspeakers and get into the base. I have the data files on disk but I am unsure how to load them into the manufacturer's data base without interfering the existing data?

When you overpopulate a room with too many listener's seats, is there a way you can globally delete all seats in one easy command?

Go to the Listener Seat Tables (Ctrl+Shift+S) and select the seats you want to delete by dragging the mouse down the left most column. Then go to Edit/Delete Listener Seats. This would waste all the selected seats.
Of course this would work for other items, too.

After I activated a loudspeaker in the project data module nothing happens. What did I wrong?

There are two ways to activate items for use:

I opened a Vertex property sheet and checkmarked "Invisible". Afterwards the Vertex isn't rendered anymore, so far so good. But now I want the Vertex to appear again, but I can't pick it. How can I get it back?

There are a fistful of possibilities to solve this problem:

I opened a Vertex property sheet and checkmarked "Invisible". The problem is, that the Vertex is rendered the same way like before, nothing changed. Is this a programming bug?

Only one checkmark can cause a behaviour like this. In the Options Window/Items Tab (Shortcut: F9) please change (LMB click) the column "Inv." (for invisible items) in the row "Vertices" from "Yes" to "No". This will cause all Vertices which are set invisible not to be rendered.

I inserted a vertex P1 at (0,0,0), then I duplicated it and I chose for the displacement of the new P2 x=+3. It did not move, why?

EASE 3.0 Only: Make sure that Room Symmetry is turned off or (if it is turned on) that the Symmetry Axis is not at x=0, otherwise a displacement moving the Vertex off the axis (in x-direction) is not allowed.