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Looks like the module's home folder is a layer or so too deep. When you install modules, you need to make sure you upload only the module folder. On a FTP the structure is usually like so:
%xoops_server_root%/modules/module_name/
Usually there are only php files and other subdirectories in the root of the module folder. When in doubt, open xoops_version.php and look for...
$modversion['dirname'] = "module_name";
This will tell you the name of the folder to upload.
Replace module_name with the actual name of the module, of course.
Hope this helps.