No Wall, Door, or Window Placement Buttons Display in the Ribbon Interface
To resolve this issue, move all "Personal*.*" files to a backup folder and exit and re-start AECOsim Building Designer. The user interface will be restored to the original settings and the ribbon interface should display correctly containing all command buttons.
The location of these files can be found defined in the configuration variable MS_RIBBONPREFS under File - Settings - Configuration - Configuration Variables.