Index: src/main/resources/scripts/migration/from4_4To4_5/stk/RemoveTemplateToPrototypeRedundancy.groovy
===================================================================
--- src/main/resources/scripts/migration/from4_4To4_5/stk/RemoveTemplateToPrototypeRedundancy.groovy	(revision 55696)
+++ src/main/resources/scripts/migration/from4_4To4_5/stk/RemoveTemplateToPrototypeRedundancy.groovy	(working copy)
@@ -82,7 +82,9 @@
    */
   def private deleteEmptyNodes(){
       emptyNodesPaths.each{ String emptyNodePath ->
-      hm.delete(emptyNodePath)
+        if (hm.isExist(emptyNodePath)) {
+          hm.delete(emptyNodePath)
+        }
       }
   }
 
@@ -111,7 +113,7 @@
 
   /**
    * Remove redundancies between all templates located within the passed module in comparison to all passed site definitions.
-   * @param moduleName The module name of where all templates a re located to compare.
+   * @param moduleName The module name of where all templates are located to compare.
    * @param siteDefinitionPaths All the site definitions which should be compared with the modules templates.
    * This can occur in projects where different definitions share the same templates.
    */