--- src/pgm2asc.c	Fri Apr 14 11:07:42 2006
+++ src/pgm2asc.c	Fri Apr 14 11:06:15 2006
@@ -1200,6 +1200,7 @@
         } end_for_each(&(JOB->res.boxlist));
 	box4=box5;
       	{
+          if (box2 != NULL && box4 != NULL){
           if( /* umlaut "a "o "u, ij; box2 is the dot, box4 the body */
             ( y1<=box2->m2
               &&   box4->x1>=3*x0-2*x1  /* test if box4 is around box2 */
@@ -1252,7 +1253,7 @@
 	    list_del(&(JOB->res.boxlist), box4); /* ret&1: error-message ??? */
 	    free(box4);
           }
-	}
+	  }}
       }
 // continue;
       // horizontally broken w' K'