(Continued conversation)
For ability to verify things for  making statements in the Wikibook and  TrainzOnline Wiki, I'm  occasionally running (I've got each installed,  that is) AT LEAST one  build code version of each release since TC3...  absent only TS12-SP1+hf4  which is one of the four TS12's Installed or  cloned. (Get to new stage,  immediately copy it as a backup, but have  cloned it in the old before  the upgrade, netting three. [Or copy the  targeted state, fix up the  registry, then update that after testing  it's working.] The copy of the  new upgrade is the new runtime version,  the one upgraded directly, the  safetynet/backup. Protects my time that  way. The copies/"state clonings"  are usually across to another HDD, so  the copy goes FAST), then I do a  quick registry edit to point the right  paths for whatever working  version I'm running every day I run that  build. 
Resuming the main topics...
	
		
	
	
		
		
			I had quite a few missing KUID's too.  When you   open the TRS12 Contents, when you right click and look at the   dependencies it shows all of them.
I then clicked show assets in list, then it shows them in the page.  I   found if I right clicked on one that was missing, the menu would show   'download' and under it 'download this version' which is a new tab the   others don't have. Even with unknown ones, it would usually find it and   download the older version.
		
		
	 
Actually, being inexperienced with CM/CMP overall, I just put that  together--about looking for updates before fixing assets--about a month or so ago. OTOH, hanging with guys in Yz-Tz with ten continuous years of Trainz CM experience, I was quite willing to fix a few hundred to solidify my own knowledge of the Trainz data model and progression of versions. I need a handle on that to write accurately! 
	
		
	
	
		
		
			Even with unknown ones, it would usually find it  and   download the older version.
		
		
	 
That second ticket I submitted, seems  to have changed that 'TS12' suspected behavior (?perhaps part of HF3???)... 
I have the impression It's now  force-feeding me the updated version when I specify a explicit original  KUID (whether I want it or not!), such as those deleted and disableds I mentioned. However, 
also an  impression I've not confirmed -- several of my state-before upgrade  installs may well still give me the originals I need to correct the Dels  & Dis'ds list. I need time to play with these factors--to ensure my  impressions are facts, or I'd have already put in a third "THEY FIXED  IT!" ticket!
	
		
	
	
		
		
			I also ended up uninstalling 2006 as the updates really screwed with the layouts in surveyor.
		
		
	 
This may be my fault. IN early May/late-April... I'd filed a ticket  finding that a large shopping cart  of mixed trainz-builds put together  using the Blackpages had gone to T'06 even though I'd meant for it to go  to T'12--which was open to CM at the time! So far as I can tell the  controlling factor is the 
pathspec in the registry for filetypes 
.cdp and .cdp2's,  which was seems to be changed If and When you download to T'06. As a  CE/EE I've been changing paths in the registry for over a decade, but  this time I didn't verify in advance what was there (referred to as the  2nd instance below). This experience re-taught and emphasized to verify  that --though I'd encountered the mis-targeted shopping cart launch  before, but didn't spend a lot of time but to figure the cdp association  out.  That shopping cart dumped a large bunch of wholly inappropriate  trainz-builds into CMP (1st instance, there were some Black Pages  downloads in between that went where I wanted AFTER making sure of the  pathspec. I haven't established in my own head whether such a REGEDIT  change takes effect immediately but of a certainty it's SAFE to change  it and THEN REBOOT, IIRC, a CMP kernal stays in memory [memory leak] if  you just quit out, so the reboot gives you a certain state.)-- T'06  hasn't a clue about Speedtrees and AlphaHints, for example. That  very  week, IIRC, I started the shopping cart "THEY FIXED" that went south the  next time I triggered the download on the shopping cart. I'd added to  it on and off when I didn't want puzzles and shopped for various kinds  of assets or by author, etc. Had 12 pages or so in that shopping cart by  the time I wanted to deal with new errors! When that download tried to  goto T'06, I suspended it and issued a ticket asking THEY reset the  task, or at least send me a list of kuids in the cart. NEITHER was  effective. The cart disappeared, whether because of in place software  assessing it as completed, or (I'm pretty sure) their action.
"Good Afternoon Fabartus
We do  not support the use of the 'download cart' function on the  Download Station  website with current versions of Trainz, since this  function has been obsoleted  by the 'Download Helper' tool in Content  Manager. As such, we are no longer  maintaining this function, and you  may find that it does not function with  versions newer than TRS2004.  You may also find that current (and possibly older)  content may show as  'invalid'.
You can still use the Download Station  website to search for content,  and add the content to the Download Helper panel  in Content Manager.  This is done by clicking on the 'Download (helper)' icon.  This will  then add the content (and it's dependencies) to the 'download helper'   tool in Content Manager. We recommend opening Content Manager yourself  first.  You should then be able to download the content by clicking on  the 'start'  icon.
In regards to kuid:-1:101291 it is an old bogie asset from TRS2004  (or  possibly pre TRS2004) that was obsoleted by a new bogie in either an  update  for TRS2004 or in TRS2006. I do not have the replacement asset's  kuid on hand as  this is part of the legacy content, however there have  been many posts regarding  this on the forums.
Regards Zec Murphy"
 
I intend to experiment with this and settle the uncertainty, but I've  had too many more pressing asset management issues to get back to it. 
Ever  since the shopping cart has been the only way I  can locate assets to  cure another headache I created for myself  rushing to get a error free  TS12 to upgrade to HF4...
	
		
	
	
		
		
			Another glitch I had was I would download it and it may be a faulty asset. I found it on the download page at 
http://www.auran.com/TRS2004/DLS.php  (tick all the boxes for the downloads below the one you are looking for  to maximize the search) and downloaded the file NOT using the helper,  but the FTP. Then you start TRS12 and then drop the file/s you just  downloaded into the download area. It will ask to re-install and I  overwrote them which gave me a good clean asset. Not sure why this  worked, but it did!
		
 
 I haven't tried that yet. Did see it mentioned as an error fix remedy, I think in that TS2010 sticky compiling how to fix errors, but there are so many things to do, and so little time! When I locate the below again, I'll try that. A test handful worked at reacquiring them, even broken, which is all I need for now!
You may also find that current (and possibly older)  content may show as 'invalid'. 
IIRC, this was happening the first time I submitted a ticket... like March!
My other big problem now... 
Their fix is handicapping me in another regard -- I'd cross-loaded a bunch of
 unfixed faulty assets from  one of my TS09 or TS10 installs. I'd had downloaded a 125 faulty assets--seems  to be split between   TS10-SPx and TS09-SP4 installs, then imported into  TS12. Initially   disabled those and worked on  cleaning up the errors in  the 9 & 10   releases. (After a while, beginning to see repeats, I  started a  library  of fixed assets from the validated versions just  before final  commits,  but alas, started that far too late. Did I mention  Trainz  Time is a  Premium luxury on my schedule, so scarce? Well repeat  it  often to your  self. <BSEG> [so too is time spent on the forums!])  T'06 excepted,  Have to commit,  validate, then reopen to copy with  T'06. After I began  working with TS12  regularly, about mid-March,  iirc, I wanted to goto  HF4, but had those pesky 125  bad assets. So  innocently I deleted them.  But they were already disabled... Ooops! Now  there were 1
25  deleteds and disableds,  the  DLS-CM-3.7 interface will not re-download! 
Tried   Imported by  CDPs...  won't take them so I can undisable them either that easy way  either.  Finally figured out importing content from an open for edit  version  will. Importing that way leaves them open for edit, and restores  the  ability to re-enable them. Now I need to find where the last bunch  of  the group are (Less than 50 now, and instead I'm telling you about  it,  vice doing it as planned this am!) 
	
		
	
	
		
		
			...NOT using the helper,  but the FTP. Then you start TRS12 and then drop the file/s you just  downloaded into the download area. It will ask to re-install and I  overwrote them which gave me a good clean asset. Not sure why this  worked, but it did!
		
		
	 
I've seen that method, but haven't tried it yet. But one reason it may have worked was the internet might have garbled the data stream, so you got corrupted data. On the advice of Jcitron, I deleted a number of things and redownloaded them when he got functional (fault free) versions of the same asset I was working with. I should probably make that a method of first choice, but haven't yet, // Frank