The OpenAFS for Windows installers include Debugging Symbol files which should be installed if you are experiencing problems and need to send crash reports or view OpenAFS stack traces within Process Explorer or Debug View. This is true for both the release and the debug versions of the installers. The difference between the release and debug versions are:
whether or not the binaries were compiled with optimization (release: yes, debug: no)
whether or not the debug symbols are installed by default (release: no, debug: yes)
whether or not fs trace logging is turned on by default (release: no, debug: yes)
whether or not additional debug statements were compiled into the binaries (release: no, debug: yes)