Index: trunk/src_plugins/io_mentor_cell/read.c
===================================================================
--- trunk/src_plugins/io_mentor_cell/read.c	(revision 37930)
+++ trunk/src_plugins/io_mentor_cell/read.c	(revision 37931)
@@ -1076,7 +1076,7 @@
 	if ((dt != NULL) && (ctx->pcb != NULL)) {
 
 		if (dt->subc_tree == NULL)
-			dt->subc_tree = rnd_r_create_tree();
+			rnd_rtree_init(dt->subc_tree = malloc(sizeof(rnd_rtree_t)));
 		rnd_r_insert_entry(dt->subc_tree, (rnd_box_t *)subc);
 
 		pcb_subc_rebind(ctx->pcb, subc);