Welcome to the forum.
A good old classic this one.
You cannot change just the case. Add any character somewhere
in the name and save that. Now go back and remove that character
and change the case of the other one.
The only wrinkle is if the topic title and file name are one
word, then the two have to be the same case so you cannot have Help
as the title and help.htm. There are ways to trick RH and make it
look like that has worked. Trust me that you will find a problem
later on. The easy solution is to use a file name with a variation
like help_topic.htm. I think this might apply to anything where the
title and file name are the same but if you set RH up to have
underscores instead of spaces, that gets around the problem.
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