[starman?]

Working on 4.07 with this proviso (as mentioned by Dr. OSama);

Install the product twice - allow overwrite the 2nd time.

Go to the Usergroup you want to allow permission to use this add-on and find the section called Attachment Permissions. In this section at the bottom you will see Can View Who Downloaded *IMPORTANT* If already set to Yes (by default groups 5, 6 & 7 are) then change it to No and then click UPDATE at the bottom of the page. When the list of groups then re-appears then select the same group again and then change it back to YES and update again.

Attach a file to a post and save and then refresh your browser (F5 or ALT F5). Download the attachment and then do another refresh and then you can see the magic.

It does work but is a pain in the ass to get working. Hope this helps.