The
Unknown location label can sometimes appear if a later version of an asset has been uploaded to the
DLS but the original version was not uploaded or had been removed for some reason (e.g. it had problems that were fixed in a later version or was removed for copyright violations).
Example: A user creates a new asset, lets say <kuid:1234:5678> but does not upload it. He/she updates the asset, three times, to <kuid2:1234:5678:
3> (updates normally follow this kuid code pattern of adding a 2: at the start and an update number, :n, at the end) which is uploaded to the DLS. So the first version to appear on the DLS will have a 2: at the start and a :3 at the end of its kuid value. The original version and the updated :1 and :2 versions will be labelled as "Unknown location".
One technique that often (but not always) works is to do a right mouse click on the asset with the Unknown location label and select
List asset versions. You may find that there is a version that is available for download.
There are users who create assets for their own and other web sites and refuse, for a variety of reasons, to put their assets on the DLS. This, of course, is their right but it does mean that anyone who installs a route, session or other asset that uses one of these non-DLS assets then has to hunt for them. Sometimes, but not always, route and session creators will identify where these missing assets can be found. I gave up doing the "missing asset hunt" years ago. Now if I download a route with missing assets then I will either ignore them (if they are non-critical assets such as trees), or find a DLS replacement if possible and there are not too many of these missing assets, or I simply delete the route (and keep the DLS assets it has given me) and move on. This is the "downside" of relying almost entirely on user created assets, but it is far outweighed by the benefits - we get some great assets created by the community for free. As dangavel points out, N3V is a small operation and does not have the staff, time or resources to create everything for us - and I suspect that it would be a very limited offering if they did.
ADDENDUM:
"<kuid2:124060:60046:3> swaying script library" is a Packaged asset (meaning it is part of a DLC package - 1029.tzarc whatever that is) but it does have previous DLS versions labelled "Available for Download, Obsolete" - Obsolete because I have the latest packaged version installed on my system.
<kuid2:124060:60046:2> swaying script library
<kuid2:124060:60046:1> swaying script library
<kuid:124060:60046> swaying script library
You can install any one of the above.