Comment 2 for bug 234065

This also happened to me..

Actually, when I did an alternate search manually, DC++ found the files and matched the queue as it's in the settings. But it didn't added back the sources...

It's in the system log:
[20:12:44] CyB: Matched 4 files
[20:12:44] [OP]CyB: Matched 4 files
[20:12:45] CyB: Matched 4 files

But still "No users to download from".

This happened for me when I downloaded the files from a specified user, he removed them (this is how the original "No users to download from" came up) then readded the files. From this point, auto-search doesn't add back either the manual search with auto-matching.
I need either select "Readd sources > All" or search for the file and "Download to > .. ".