It looks like your Sonic Wave skill is missing the correct effect/animation. Since you've tried different clients and data files, the issue might be in your GRF or Lua/Lub files. Check if you have the correct skillid.lub, skillinfoz.lua, and effect files for Sonic Wave. Also, verify your data.grf and rdata.grf are up-to-date. If using custom GRFs, try running without them. You can also check your server's skill_db for correct skill settings. Let me know what you've tested!