This section describes platform-independent issues in delivered applications which use CAPI. See also Delivery on Mac OS X, Delivery on Microsoft Windows, and Delivery on Linux, FreeBSD, AIX, x86/x64 Solaris and Unix for issues specific to each supported windowing system.
See the CAPI User Guide and Reference Manual for details of the CAPI symbols mentioned.
The function capi:top-level-interface-geometry-key depends on symbol names and hence will break at delivery level 5 unless the relevant symbol names are retained. Use the deliver keyword :keep-symbols to keep the class name of your top level interface.
LispWorks Delivery User Guide - 15 Feb 2015