include problem with lilypond-book

[Hartmut Leister]

Dear lilypond users,

I've got a problem using lilypond-book with included lilypond scores
after updating to version 2.18. The same constellation worked on 2.14 (I
had to update for compatibility reasons).

I created a small example, consisting of
main.tex [1]
score.ly [2]
inc/include.ly [3]

When I call lilypond-book
> lilypond-book --pdf --include=inc --output=out main.tex
it results in an error [4], saying it can't find "include.ly". The same
error occurs, if I write
> \include "inc/include.ly"

What did I miss?

Best wishes
Hartmut

[1] https://www.dropbox.com/s/oe12mg2jv5ylqj9/main.tex
[2] https://www.dropbox.com/s/hdqp59vph47wto0/score.ly
[3] https://www.dropbox.com/s/ctra208mv692aae/include.ly
[4] https://www.dropbox.com/s/iump4cto9ba65vz/error.log

-- 
Hartmut Leister <address@hidden>