Hello Dan
I just found this post after a brief search which is quoted below explaining this, from Zec.
"Hi All
Please try the following:
First, start Content Manager and then do an Extended Database Repair.
Now, close Content Manager, and press CTRL + SHIFT + ESC to bring up the Windows Task Manager. Now go to the 'processes' tab and locate the TADDaemon.exe process and wait for it to disappear/finish. Do NOT end process it, as this may cause issues with the database and may damage assets.
Now, once the TADDaemon.exe has disappeared, run Content Manager again. Now enter the filter 'Faulty = True' + 'Builtin = True'. This will show the items marked as faulty that are built-in. Now press 'CTRL' + 'A' on your keyboard, then right click on one of the items and go to the 'view errors and warnings'. This will go through ALL of the selected items, and should remove any items listed.
If some items do show actual errors, right click on them and then click on 'Revert to Original' once all of the others have cleared. This should then revert them back to a full 'built-in' status, and will hide the errors.
Please also try setting built-in = false, and do the same. This will clear any incorrectly 'faulty' marked assets that aren't built-in.
This is what worked on my installation of Trainz, which was not a clean install (it also had a fair bit of content installed)."
Cheers
AJ
