Same issue had been encountered with "OpenElec", which I used a different method to enable to 'finding' of the library file:
OpenELEC Mediacenter - OpenELEC Forum - Graphical Screensavers not displaying in 8.0.x ver (1/1)
I used 'symbolic' links to reference the 'version specific' library file, to the 'generic' 'non-version-named' one...
i.e.: ~/.kodi/addons/screensaver.rsxs.helios # ln -s screensaver.rsxs.helios.so screensaver.rsxs.helios.so.1.3.0
NOTE: Several screensavers do NOT work with the 8.x (and previous 7.x) *elec versions (and will 'crash' your running system if triggered):
"shadertoy" - presents a 'white' screen, exits normally
"skyrocket", "hyperspace", and "helios" - 'crash' kodi, which 'restarts' back to main menu.
"lattice", "asterwave", and "cyclone" - display 'nothing' (black screen), exit normally