Psider wrote:If it's the skin that's missing, but the topic content looks all right, then I'd start by looking at the path to the skin folder. (I feel like I've seen other posts saying that it remained capitalised, even though the links were changed to lowercase, but I could be misremembering.)
The other option, assuming a web server, is to ask the server administator to change the server to be case-insensitive (my experience is they don't like to, but it is possible...)
Thank you, Psider!
It was exactly this. I thought I was going mad. I had "Use lowercase filenames" enabled in the target and the skin folder was being output in uppercase, regardless. I think even at one point there were 2 "Skin" & "skin" directories, just to confuse even more.
I now have the "Use lowercase filenames" option disabled.
(I only had it enabled in the first place for a previous long-standing bug, that has since been resolved.)
Just to confuse matters, once I was absolutely sure I had resolved it, I launched the help in the browser on the server once more...and the side navigation was gone again. Initial panic faded when I realised that this time, expanding the browser window meant it reappeared (responsive output kicking in, just at the moment when I didn't need it!!!)
Thanks to all for your suggestions.
Once again this forum came up trumps!
Regards,
Feebeegeebee