diff --git a/src/main/java/org/aksw/gerbil/transfer/FileMeta.java b/src/main/java/org/aksw/gerbil/transfer/FileMeta.java
index 4a5b46061..1f274e601 100644
--- a/src/main/java/org/aksw/gerbil/transfer/FileMeta.java
+++ b/src/main/java/org/aksw/gerbil/transfer/FileMeta.java
@@ -20,7 +20,7 @@
 
 /**
  * Container file to upload files with blueimp/jQuery plugin
- * 
+ *
  * @author didier
  *
  */
@@ -36,6 +36,8 @@ public class FileMeta {
     private String fileType;
     private byte[] bytes;
 
+    private String description;
+
     public String getName() {
         return name;
     }
@@ -108,4 +110,12 @@ public void setBytes(byte[] bytes) {
         this.bytes = bytes;
     }
 
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
 }
diff --git a/src/main/java/org/aksw/gerbil/web/FileUploadController.java b/src/main/java/org/aksw/gerbil/web/FileUploadController.java
index 8a83971bd..8423a46b7 100644
--- a/src/main/java/org/aksw/gerbil/web/FileUploadController.java
+++ b/src/main/java/org/aksw/gerbil/web/FileUploadController.java
@@ -25,8 +25,11 @@
 
 import javax.servlet.http.HttpServletResponse;
 
+import org.aksw.gerbil.dataset.impl.nif.FileBasedNIFDataset;
+import org.aksw.gerbil.exceptions.GerbilException;
 import org.aksw.gerbil.transfer.FileMeta;
 import org.aksw.gerbil.transfer.UploadFileContainer;
+import org.apache.jena.riot.Lang;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
@@ -92,9 +95,19 @@ public ModelAndView upload() {
             }
             files.add(fileContainer);
         }
-
+        boolean isErroneousFile = false;
+        for(FileMeta file:files){
+            try{
+                FileBasedNIFDataset dataset = new FileBasedNIFDataset(path+file.getName(), file.getName(), Lang.TTL);
+                dataset.init();
+                file.setDescription("Found "+dataset.getInstances().size()+" Instances");
+            }catch(Exception e){
+                isErroneousFile =true;
+                file.setError(e.getMessage());
+            }
+        }
         UploadFileContainer uploadFileContainer = new UploadFileContainer(files);
-        return new ResponseEntity<UploadFileContainer>(uploadFileContainer, HttpStatus.OK);
+        return new ResponseEntity<UploadFileContainer>(uploadFileContainer, isErroneousFile?HttpStatus.BAD_REQUEST:HttpStatus.OK);
     }
 
     private void createFolderIfNotExists() {
diff --git a/src/main/webapp/WEB-INF/views/config.jsp b/src/main/webapp/WEB-INF/views/config.jsp
index 32f64f408..897c0ad04 100644
--- a/src/main/webapp/WEB-INF/views/config.jsp
+++ b/src/main/webapp/WEB-INF/views/config.jsp
@@ -625,7 +625,9 @@
 																				+ name
 																				+ "("
 																				+ file.name
-																				+ ")</span></li>");
+																				+ ") : "
+                                                                                + file.description
+                                                                                + "</span></li>");
 														var listItems = $('#datasetList > li > span');
 														for (var i = 0; i < listItems.length; i++) {
 															listItems[i].onclick = function() {
@@ -646,9 +648,27 @@
 									$('#progress .progress-bar').css('width',
 											progress + '%');
 								},
-								processfail : function(e, data) {
-									alert(data.files[data.index].name + "\n"
-											+ data.files[data.index].error);
+								fail : function(e, data) {
+                                    data = data.response().jqXHR.responseJSON;
+                                    var name = $('#nameDataset').val();
+                                    $
+                                        .each(
+                                            data.files,
+                                            function(index, file) {
+                                                $('#datasetList')
+                                                    .append(
+                                                        "<li><span class=\"glyphicon glyphicon-ban-circle\"></span>&nbsp<span class=\"li_content\">"
+                                                        + name
+                                                        + "("
+                                                        + file.name
+                                                        + ") :"
+                                                        + file.error
+                                                        + "</span></li>");
+                                                $('#nameDataset').val(
+                                                    '');
+                                                $('#URIDataset')
+                                                    .val('');
+                                            });
 								}
 							}).prop('disabled', !$.support.fileInput).parent()
 					.addClass($.support.fileInput ? undefined : 'disabled');