I just got a reply from my reply:

This is usually the result of either downloading a file with an
incredibly large name or rogue characters in the name, trying to
download to a full disk, or downloading to a directory to which you
don't have administrator rights. Please try the following:

Press Kill Download
Select the Incomplete folder, in the Library, and select Resume.

Thanks,
Zenzele

Folks! They are not reading the support emails. They see "can not move to library" and send the standard response even to replies.

They don't say they are looking into it or the fix is coming in the next version. I only hear that from the moderators.

Maybe they are too busy counting the money from Pro sales but they can count me out for now.
I really liked Limewire.