grilo-test-ui-0.3 is able to find all plugins correctly. dev@unstable:~$ strace -e trace=file grilo-test-ui-0.3 | grep "/usr/lib/x86_64-linux-gnu/grilo-0.3" | grep "^open"
open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlbookmarks.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlchromaprint.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlmetadatastore.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlopensubtitles.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrljamendo.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlthetvdb.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrllocalmetadata.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrltracker.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlpodcasts.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlyoutube.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrloptical-media.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrldleyna.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrltmdb.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlflickr.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrldpap.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlfilesystem.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrldaap.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlraitv.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlgravatar.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlvimeo.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlshoutcast.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlfreebox.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlluafactory.so", O_RDONLY|O_CLOEXEC) = 13 open("/usr/lib/x86_64-linux-gnu/grilo-0.3/libgrlmagnatune.so", O_RDONLY|O_CLOEXEC) = 13 But, doesn't load them.