running milhouse's #0815 build on a chromebox. the addon.xml for screensaver.rsxs.euphoria points to screensaver.rsxs.euphoria.so.1.3.0 however the extension is actually screensaver.rsxs.euphoria.so. either the addon.xml needs to be adjusted or the extension renamed.
debug log for measure: gELX
i just checked screensaver.rsxs.cyclone and it suffers the same. addon.xml points to screensaver.rsxs.cyclone.so.1.3.0 but screensaver.rsxs.cyclone.so is in the directory. going to hazard a guess and say most/all screensavers in the repo are broken.