Sent as a bug report and got this back.
Hi Stagecoach - Thank you for contacting QA. When we first attempted to reproduce this only "<kuid2:61392:2003:2> CoupleAtTrackMarkList" installed properly for us. These...
<kuid2:61392:7004:23> DriveToTrackmarkList v2 (SP2 and later)
<kuid2:61392:7001:23> NavigateToTrackmarkList v2 (SP2 and later)
...reported this:
; <kuid2:61392:4053:18> Unable to download asset <kuid2:61392:4053:18>. File not available on server.
During a later attempt that did not occur, as though someone was updating the asset on the server or there was a comms hiccup (?)
<kuid2:61392:4053:16> when searched for asset versions did not show 17/18 versions nor did it show obsolete or new version available. I did delete my version and then clicked to download it again and 17/18 versions appeared on my install but as unknown asset. A repeat did then bring up 18 version as installed third party.