The project so far: I have a Main Project into which I have
merged Project A and Project B.
The way I had it working was this: I had created books in
Main Project for Project A and Project B, the names of the books
being duplicates of the names of the projects being merged, so I
had, for example: Project A > Project A > topics...
This seemed redundant to my supervisors, so I deleted the
extraneous books from the Main Project.
Now, I can still compile projects and all goes relatively
well, except now I'm getting a message when I call the Main
"The file @MSITStore:... .hhc contains an invalid HTML tag."
I can still access the projects as before, but ... what is
the invalid HTML tag?