Thanks for the feedback!
The extension only checks those .ini files and does not scan the file system to check if the plugin file actually exists so I guess that explains why some deleted plugins might stick around until the plugin list is re-scanned.
Can you tell me which clap plugins you tried to load? and in which reaper version? mac or windows? I tried a couple in recent reaper versions (6.75-77) including chowtapemodel, fluctus by nakst, some fullbucket stuff and these seem to work fine so I’m not sure whats going wrong there.