* lily/tie-performer.cc (stop_translation_timestep): reset

[lilypond.git] / lily / paper-book.cc

diff --git a/lily/paper-book.cc b/lily/paper-book.cc
index 6c5c02dabb61fcd52fa9f6980b84c970d1f284b7..21abd2737db8d0843a965657e6e636ab21855e73 100644 (file)
--- a/lily/paper-book.cc
+++ b/lily/paper-book.cc
@@ -328,8 +328,11 @@ Paper_book::lines ()
       if (!title.is_empty ())
        lines_ = scm_cons (stencil2line (title, true), lines_);
 
-      SCM line_list = scm_vector_to_list (score_lines_[i].lines_); // guh.
-      lines_ = scm_append (scm_list_2 (scm_reverse (line_list), lines_));
+      if (scm_vector_p (score_lines_[i].lines_) == SCM_BOOL_T)
+       {
+         SCM line_list = scm_vector_to_list (score_lines_[i].lines_); // guh.
+         lines_ = scm_append (scm_list_2 (scm_reverse (line_list), lines_));
+       }
     }
   
   lines_ = scm_reverse (lines_);