Re: ERROR: Wrong type (expecting pair): ()

[Graham Percival]

On Sat, Nov 26, 2011 at 03:03:31PM -0800, Shevek wrote:
> 
> Aha, line numbers are indeed progress. However, the line numbers for the
> error are in some lilypond library file, so that's unhelpful in tracking
> down the problem. Here's the relevant part of the compile messages:
> 
> /usr/local/lilypond/usr/share/lilypond/current/scm/lily-library.scm:210:5:
> In procedure ly:book-process in expression (process-procedure book paper
> ...):
> /usr/local/lilypond/usr/share/lilypond/current/scm/lily-library.scm:210:5:
> Wrong type (expecting pair): ()

Construct a tiny example.
http://lilypond.org/tiny-examples.html

> The error message is at the very end of the debug output. I would love to
> post some relevant code, but I have no idea where to even start looking. Do
> you understand these error messages?

start commenting things out.
http://lilypond.org/doc/v2.14/Documentation/usage/troubleshooting

> re David, I am using 2.14, which as I understand it is the recommended
> version for users. I have written the entire project using 2.14. I tried
> just changing the version statement and running convert-ly anyway, just in
> case, but the only changes it appeared to make were some deprecated
> /cresc's, and it didn't fix the error. Should I be upgrading to 2.15?

No, stick with 2.14.  David thought you were using 2.15 since he'd
changed some stuff in there.

- Graham