LyX ⇒ Argument of \NoCaseChange has an extra }.

[Geek10]

If you have cross-referenced a subheading in your document, and want to see what it looks like in PDF form and you get the following error:

Argument of \NoCaseChange has an extra }.
Paragraph ended before \NoCaseChange was complete.

All you have to do is type one space in between the heading and the cross-reference, and the PDF will now compile. I got the above error twice for missing a single space, meaning I couldn't compile the PDF. It wasn't very helpful advice by Lyx, but maybe the code gurus would have picked that up faster than me...

[redseventyseven]

I tried this, came up with a new problem.

In my case, the "Argument of \NoCaseChange has an extra }" error comes up whenever a Section heading is immediately followed by a Subsection heading, and I want to reference the Section.

Adding a space between the Section heading and the label breaks any cross-references referring to it.

Back to square one it seems!

Follow-up:
The workaround I'm using is to get rid of the Subsection heading completely. In most cases the Subsection heading was something like "Introduction" or "Background", so isn't strictly necessary.

[redseventyseven]

Nope, still not right.

Cross-references to Subsections work fine, without the extra space.

Cross-references to Sections are broken: I get the error mentioned above if I don't include an extra space; I get "Section ??" in the rendered pdf if I do.

Any ideas?

[redseventyseven]

I think I finally solved it. In my case, inserting a space did not work. Putting the label on a new line (in "Standard" markup) immediately after the Section heading did work.