If you check the plugins that don't work, my bet is that they have their filename (usually in a .php file present in /YOUR_ADMIN/includes/extra_datafiles) in the form
...
Type: Posts; User: lat9
If you check the plugins that don't work, my bet is that they have their filename (usually in a .php file present in /YOUR_ADMIN/includes/extra_datafiles) in the form
...