Thank you. I've somewhat gotten a bit further in this. So yes, component store is corrupt, indicates in logs that there are CSI corruptions. I did a comparison of what it indicated in way of files in manifest as corrupt and essentially these files are missing from the folder. This may be due to the server having had a possible cumulative update between the last good backup (Dec. 15) and the date of repair using registry rollback to that date, so at some level it knows there should be files and they are missing. I'm copying all files from manifest folder from the Dec. 15 restore copy, to the live running folder and will run DISM again to see if component store repair completes.