When exploring the symbol problem (see last posting in that thread), I found another small bug in ViaCAD 9:

1. Open a new drawing and create a symbol.
2. Save it with "Save as Symbol". At this time, the Concept Explorer will open automatically, with the "Symbols" tab in front.
3. Now, close the diagram with "Ctrl-F4" (or File->Close).
The Concept Explorer will remain open, and it is not possible to close it with the x at the right upper corner.

4. When creating a new diagram e.g. with Ctrl-N, this state does not change - the Concept Explorer is open, but cannot be closed with the x.
5. Selecting "Window->Concept Explorer" will still not close it - it seems ViaCAD thought it is closed, and hence this actions "opens" it.
From now on, the Concept Explorer can be closed with x or by once more selecting "Window->Concept Explorer".

Regards
Harald M.