It seems that the SOTA Site admins have changed the site again and broken my SOTA CSV Editor update process once more (it worked for me a day or two ago, but not today).
Although the URL still appears to be https://www.sotadata.org.uk/summitslist.csv as shown for the link on the site at https://www.sotadata.org.uk/en/summit/list when clicking the link as a user it sliently redirects to https://mapping.sota.org.uk/summitslist.csv (which a web-browser will accept) but my code does not follow that redirect.
There are 2 possible work arounds for this (until I change the code again) :
Option 1 is to download the file yourself and place it into your SOTA Logs Folder and then run the Database update process, however this will be required each time you want to update.
Option 2 is to edit the Windows registry and add a value that will tell the program to use the new location.
This can be done by downloading a file from my website using the special URL:
Follow the instructions on that page
Then run the normal update process.