Junction arrows disappeared

[JackDownUnder]

Hi for some reason the Red & Green junction indicators have suddenly disappeared.
Everything has been ok for all the time that I have used Trainz since 2004, however after three things occurred at about the same time they have gone missing.
There was an update on Window and on NVIDIA plus I carried out a "Delete Missing Assets" procedure.
Does anyone have any suggestions please.
I have just had a thought whilst writing this that the NVIDIA update was through CCleaner and not how I usually perform these updates, I will rerun that update and advise result.
Updating NVIDIA driver did noyt solve the issue.

 

[G.M.]

Ctrl H in driver does nothing Jack?

 

[JackDownUnder]

no I use that all the time when commencing a drive session.
I have also checked other settings to no avail.

One of the mysteries of Trainz

 

[G.M.]

the actual file where these overlays are <kuid:570470:100001> Junction Overlays
check if it is installed (= base) and not faulty

 

[JCitron]

Run a database repair. That usually fixes weird things like that. The other things you did were coincidental, I think.

 

[JackDownUnder]

Ran a Ctrl DBR. No obvious change.
Determined that UK Point Motor was on Tranzdem UTM Layer, strange, fixed this
Replaced all point motors with Point Motor 1.
Corona still missing in Edit Session & Drive Session however it is visible in Edit Route.
Here are images in both editing setups.
Also another issue, also illustrated in these image.
Rail on top of each other
https://i.imgur.com/bd32K3B_d.webp?maxwidth=128&shape=square
https://i.imgur.com/x7vfAab_d.webp?maxwidth=128&shape=square

Suddenly realized that Coronas are missing from Turntable's and othe items which normally have them.
Beginning to think now that it was the last NVIDIA update.
I will have to revert.
Tried reverting however it did not provided the desired result, now on NVIDIA Ver 497.29

So it appears to me that for some unknown reason the Corona's are not working correctly
By the way all required assets are installed and up to date.