A tarball went out with rpath /opt/jasp-desktop/lib only (a stale bundle-libs.sh on the runner host). libR.so then resolved to the user's system R 4.6 through ld.so.conf, which lacks utf8clen, so grDevices and every module failed to load. Check both binaries' rpath before packing. Claude-Session: https://claude.ai/code/session_01GGe7kUhooMFuzY6GaDb2w9