diff --git a/.aux/test_with_lcg b/.aux/test_with_lcg
index 5a29a404..4ebd8dd5 100755
--- a/.aux/test_with_lcg
+++ b/.aux/test_with_lcg
@@ -4,4 +4,4 @@ CMTCONFIG=$2
 source /cvmfs/sft.cern.ch/lcg/views/${LCG}/${CMTCONFIG}/setup.sh
 source build/INSTALL/thisostap.sh 
 cd build 
-ctest -N  && cmake .. -DCMAKE_INSTALL_PREFIX=./INSTALL/ && ctest -j2 --output-on-failure --test-output-size-failed 5000000
+ctest -N  && cmake .. -DCMAKE_INSTALL_PREFIX=./INSTALL/ && ctest -j2 --output-on-failure -R '(histoi_param|carlson)' --test-output-size-failed 5000000
diff --git a/ostap/core/core.py b/ostap/core/core.py
index ae0a6f69..3b49ad39 100644
--- a/ostap/core/core.py
+++ b/ostap/core/core.py
@@ -622,9 +622,17 @@ def _TO_draw_ ( obj , option = '', *args , **kwargs ) :
                 
             result = obj
 
-            ## update the pad/canvas
-            Ostap.Utils.pad_update() 
-        
+            # =================================================================
+            try  : # ==========================================================
+                ## update the pad/canvas
+                Ostap.Utils.pad_update()
+                # =============================================================
+            except : # ========================================================
+                # =============================================================
+                logger.error ( 'Exception is caught!' , exc_info = True )
+                # =============================================================
+
+                
         return result 
 
     ROOT.TObject.draw       = _TO_draw_