The reply is in the log file:
Indeed, that icon is missing. My fault: I failed to properly update the MacOS-X line for the artwork file in install.xml (which is used during the build process to download the pre-built packages).
Simply grab the latest artwork file (slviewer-artwork-cool_vl_viewer-*.tar.bz2) from
here, and extract the status_not_rezzed.tga icon from it, then place it inside the skins/default/textures/ sub-directory of the viewer installation directory.
The next releases will have this distribution bug fixed.