diff --git a/src/main/java/eu/openaire/urls_worker/components/plugins/PublicationsRetrieverPlugin.java b/src/main/java/eu/openaire/urls_worker/components/plugins/PublicationsRetrieverPlugin.java
index e8f6dbd..e7b2986 100644
--- a/src/main/java/eu/openaire/urls_worker/components/plugins/PublicationsRetrieverPlugin.java
+++ b/src/main/java/eu/openaire/urls_worker/components/plugins/PublicationsRetrieverPlugin.java
@@ -91,12 +91,10 @@ public class PublicationsRetrieverPlugin {
 
         File curAssignmentsDirs = new File(FileUtils.storeDocFilesDir);
         try {
-            if ( !curAssignmentsDirs.mkdirs() ) // Create the subdirectory.
-                logger.error("Could not create the \"assignments_" + assignmentRequestCounter + "_fullTexts\" directories: \"" + FileUtils.storeDocFilesDir + "\"!");
+            if ( ! curAssignmentsDirs.mkdirs() ) // Create the subdirectory. It may return "false", in case it already exists (will not happen, unless there is problem in cleaning up of the subdirectories) or any problem occurred.
+                throw new RuntimeException("Could not create the \"assignments_" + assignmentRequestCounter + "_fullTexts\" directories: \"" + FileUtils.storeDocFilesDir + "\"!");
         } catch (Exception e) { // Mainly a SecurityException.
-            String errorMsg = "Failed to create the full-texts directory for assignments_" + assignmentRequestCounter;
-            logger.error(errorMsg, e);
-            throw new RuntimeException(errorMsg + ": " + e.getMessage());
+            throw new RuntimeException("Failed to create the full-texts directory for assignments_" + assignmentRequestCounter + ": " + e.getMessage());
         }
 
         // Start loading and checking urls.