diff -r 70c1cc354a8f -r 47a3f39bead0 dialogs/SFCStepDialog.py
--- a/dialogs/SFCStepDialog.py	Mon Oct 09 16:04:39 2017 +0300
+++ b/dialogs/SFCStepDialog.py	Mon Oct 09 18:13:26 2017 +0300
@@ -23,10 +23,12 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+
+from __future__ import absolute_import
 import wx
 
 from graphics.SFC_Objects import SFC_Step
-from BlockPreviewDialog import BlockPreviewDialog
+from dialogs.BlockPreviewDialog import BlockPreviewDialog
 
 # -------------------------------------------------------------------------------
 #                         Set SFC Step Parameters Dialog