"Missing Files" error on WIP outfit

I'm working on weight paints for a coat I made for Genesis 2 Female, and found it necessary to exit/restart Daz Studio a few times during the process (it seems to remember old skin weights sometimes?) So each time, I saved it as a Support Asset>Figure/Prop Asset. I think in the last session I used "Save Modified Asset", which seemed to work like a typical file>save scheme.
But now, when loading G2F then my outfit, I get the following error:
"Some assets needed to load the file were missing. The content may not work as expected. The following files could not be found."
data\throttlekitty\Flared Winter Coat\Flared Winter Coat\FlaredWinterCoat_6015.dsf
The file does exist, however, and it does load into the scene, looking like the attached image, and the bones are in the right spot. Examining the .dsf and .duf files in Notepad++ everything appears to be fine, but I wouldn't know quite where to look for a problem line or two.
Where did I go wrong and can I fix this?
edit: The outfit looked normal when I last saved it.
edit 2: I remembered the issue during the session prior to this problem. The weight paint brush went invisible (only in the viewport), and other viewport tools still rendered normally, seemed like a good time to go for a walk anyway. :)


Comments
The "data" folder most be in a properly mapped library in DS's Content Directory Manager.
It is.
Can you post a screenshot of your Content Directory Manager?
Sure, here it is.