diff --git a/source/blender/include/BIF_renderwin.h b/source/blender/include/BIF_renderwin.h
index d5b934d9050..a997efb336d 100644
--- a/source/blender/include/BIF_renderwin.h
+++ b/source/blender/include/BIF_renderwin.h
@@ -52,7 +52,7 @@ void BIF_redraw_render_rect(void);
 void BIF_swap_render_rects(void);
 void BIF_toggle_render_display(void);
 
-void BIF_init_render_callbacks(struct Render *re);
+void BIF_init_render_callbacks(struct Render *re, int do_display);
 void BIF_end_render_callbacks(void);
 
 /* should not be here, ~WIP~ */
diff --git a/source/blender/render/intern/source/pipeline.c b/source/blender/render/intern/source/pipeline.c
index 1a4d025acb0..6b02a41cc8d 100644
--- a/source/blender/render/intern/source/pipeline.c
+++ b/source/blender/render/intern/source/pipeline.c
@@ -1096,8 +1096,9 @@ static void threaded_tile_processor(Render *re)
 	
 	if(rr==NULL)
 		return;
-	if(re->test_break())
-		return;
+	/* warning; no return here without closing exr file */
+//	if(re->re->test_break())
+//		return;
 	
 	initparts(re);
 	
diff --git a/source/blender/src/renderwin.c b/source/blender/src/renderwin.c
index 6790bca70a6..7e78501ed4e 100644
--- a/source/blender/src/renderwin.c
+++ b/source/blender/src/renderwin.c
@@ -1064,7 +1064,7 @@ static void do_render(int anim)
 	G.rendering= 1;
 
 	/* set render callbacks, also starts ESC timer */
-	BIF_init_render_callbacks(re);
+	BIF_init_render_callbacks(re, 1);
 	
 	waitcursor(1);
 	if(render_win) 
@@ -1146,19 +1146,20 @@ static int esc_timer_set= 0;
 /* set callbacks, exported to sequence render too. 
    Only call in foreground (UI) renders. */
 
-void BIF_init_render_callbacks(Render *re)
+void BIF_init_render_callbacks(Render *re, int do_display)
 {
-	
-	if(G.displaymode!=R_DISPLAYWIN) {
-		if(render_win)
-			BIF_close_render_display();
-		imagewindow_render_callbacks(re);
-	}
-	else {
-		RE_display_init_cb(re, renderwin_init_display_cb);
-		RE_display_draw_cb(re, renderwin_progress_display_cb);
-		RE_display_clear_cb(re, renderwin_clear_display_cb);
-		RE_stats_draw_cb(re, renderwin_renderinfo_cb);
+	if(do_display) {
+		if(G.displaymode!=R_DISPLAYWIN) {
+			if(render_win)
+				BIF_close_render_display();
+			imagewindow_render_callbacks(re);
+		}
+		else {
+			RE_display_init_cb(re, renderwin_init_display_cb);
+			RE_display_draw_cb(re, renderwin_progress_display_cb);
+			RE_display_clear_cb(re, renderwin_clear_display_cb);
+			RE_stats_draw_cb(re, renderwin_renderinfo_cb);
+		}
 	}
 	
 	RE_error_cb(re, error_cb);
diff --git a/source/blender/src/sequence.c b/source/blender/src/sequence.c
index a11c018dc0e..97d92110296 100644
--- a/source/blender/src/sequence.c
+++ b/source/blender/src/sequence.c
@@ -909,7 +909,7 @@ static void do_build_seq_ibuf(Sequence * seq, int cfra)
 				doseq= sce->r.scemode & R_DOSEQ;
 				sce->r.scemode &= ~R_DOSEQ;
 				
-				BIF_init_render_callbacks(re);
+				BIF_init_render_callbacks(re, 0);	/* 0= no display callbacks */
 				
 				/* hrms, set_scene still needed? work on that... */
 				if(sce!=oldsce) set_scene_bg(sce);