Your Extensions folder is locked or otherwise unwritable.  The extension cannot be installed.

The preferences file cannot be opened.  Built-in default values for preference options will apply.  In particular, there will be no doors.

The “Virtual Desktop Extension” file in your Extensions folder was not loaded at startup.  You must restart your Macintosh before using Virtual Desktop.

The command could not be completed, because Finder is not running.

Virtual Desktop requires the Popup CDEF.

The “Virtual Desktop Help” file appears to be the wrong version.  Please delete it or replace it with version “1.7”.

Please choose a distinct key for each direction.

Please press one key.

The door access window could not be created.  There may not be enough memory available.

The preferences could not be written.  There may not be enough memory available.

Virtual Desktop requires the FSSpec calls.

Please choose one or more modifier keys to be part of the key combination.

Virtual Desktop failed to register with the help server.

Help is not available.  The “Virtual Desktop Help” file may be missing or invalid.

Virtual Desktop requires the Alias Manager.

That door name is already in use.  Please choose a different name.

Please press only one key.

This keyboard binding is in use by another door.  Please choose a different one.

Please choose a name for the door.

Please enter a number between %d and %d.

There is no Virtual Desktop door named “%P”.

The keyboard binding for door “%s” is in use by another door.  No binding will be used.

Virtual Desktop cannot operate until the extension is loaded at the next restart.

The preferences file is locked or otherwise unwritable, so I can’t stop asking.  Sorry.

The preferences file is locked or otherwise unwritable.  You will not be able to change preference options.  In particular, you will not be able to make new doors, nor move or trash existing ones.

Virtual Desktop requires the _WaitNextEvent trap.

Virtual Desktop requires the Folder Manager.

Virtual Desktop requires the Process Manager.

Virtual Desktop cannot print a door.

That application no longer exists.

An internal error has occurred.  Please contact the author as described in “Virtual Desktop Help”, citing error number %d.