Added debug printing messages and commented trw=0 line in sans_sheet in order to solve Issue 12

lamp_mac/SANS/sans_sheet.pro

@@ -243,7 +243,8 @@ case kase of
                    widget_control,idt[0],get_value=trwc      ,use_table_select=uset_tWC     ;tr.Wat.C value
                    widget_control,idt[1],get_value=trsc      ,use_table_select=uset_tSC     ;tr.Sam.C value
                    widget_control,idt[0],get_value=watr      ,use_table_select=uset_watr    ;water sample
-                   if watr le ' ' then trw=0.
+
+                   ;if watr le ' ' then trw=0.
                    sans_settings_trans, baset,trans4=float([trw,trwc,trsa[0],trsc])<6.1>.0, transSample=float(reform(trsa))<6.1>.0
              end
 "give_IDs":  begin & uS=uset_IDs & uS[3]=nsp-1 & if not vert then uS=[uS[1],uS[0],uS[3],uS[2]]
@@ -451,7 +452,7 @@ case kase of
             widget_control,idt[0],get_value=trwc      ,use_table_select=uset_tWC     ;tr.Wat.C value
             widget_control,idt[1],get_value=trsc      ,use_table_select=uset_tSC     ;tr.Sam.C value
             widget_control,idt[0],get_value=watr      ,use_table_select=uset_watr    ;water sample
-            if watr le ' ' then trw=0.
+            ;if watr le ' ' then trw=0.
             sans_settings_trans, baset,trans4=float([trw,trwc,trsa[0],trsc])<6.1>.0, transSample=float(reform(trsa))<6.1>.0
            endif