diff --git a/hopsworks-common/src/main/java/io/hops/hopsworks/common/dao/tensorflow/config/TensorBoardProcessMgr.java b/hopsworks-common/src/main/java/io/hops/hopsworks/common/dao/tensorflow/config/TensorBoardProcessMgr.java
index a726064596..671ccef18d 100644
--- a/hopsworks-common/src/main/java/io/hops/hopsworks/common/dao/tensorflow/config/TensorBoardProcessMgr.java
+++ b/hopsworks-common/src/main/java/io/hops/hopsworks/common/dao/tensorflow/config/TensorBoardProcessMgr.java
@@ -143,19 +143,17 @@ public TensorBoardDTO startTensorBoard(Project project, Users user, HdfsUsers hd
 
     while(retries > 0) {
 
-      if(retries == 0) {
-        throw new IOException("Failed to start TensorBoard for project=" + project.getName() + ", user="
-                + user.getUid());
-      }
+      try {
 
-      // use pidfile to kill any running servers
-      port = ThreadLocalRandom.current().nextInt(40000, 59999);
+        if(retries == 0) {
+          throw new IOException("Failed to start TensorBoard for project=" + project.getName() + ", user="
+                  + user.getUid());
+        }
 
-      String[] command = new String[]{"/usr/bin/sudo", prog, "start", hdfsUser.getName(), hdfsLogdir,
-        tbPath, port.toString(), anacondaEnvironmentPath, settings.getHadoopVersion(), certsPath,
-      settings.getJavaHome()};
+        // use pidfile to kill any running servers
+        port = ThreadLocalRandom.current().nextInt(40000, 59999);
   
-      ProcessDescriptor processDescriptor = new ProcessDescriptor.Builder()
+        ProcessDescriptor processDescriptor = new ProcessDescriptor.Builder()
           .addCommand("/usr/bin/sudo")
           .addCommand(prog)
           .addCommand("start")
@@ -169,9 +167,8 @@ public TensorBoardDTO startTensorBoard(Project project, Users user, HdfsUsers hd
           .addCommand(settings.getJavaHome())
           .ignoreOutErrStreams(true)
           .build();
-      LOGGER.log(Level.FINE, processDescriptor.toString());
-      
-      try {
+        LOGGER.log(Level.FINE, processDescriptor.toString());
+
         ProcessResult processResult = osProcessExecutor.execute(processDescriptor);
         if (!processResult.processExited()) {
           throw new IOException("Tensorboard start process timed out!");
@@ -192,7 +189,7 @@ public TensorBoardDTO startTensorBoard(Project project, Users user, HdfsUsers hd
           try {
             host = InetAddress.getLocalHost().getHostAddress();
           } catch (UnknownHostException ex) {
-            Logger.getLogger(TensorBoardProcessMgr.class.getName()).log(Level.SEVERE, null, ex);
+            LOGGER.log(Level.SEVERE, null, ex);
           }
           tensorBoardDTO.setEndpoint(host + ":" + port);
           tensorBoardDTO.setPid(pid);
@@ -262,7 +259,6 @@ public int killTensorBoard(BigInteger pid) {
       ProcessResult processResult = osProcessExecutor.execute(processDescriptor);
       if (!processResult.processExited()) {
         LOGGER.log(Level.SEVERE,"Failed to kill TensorBoard");
-        exitValue = 2;
       }
       exitValue = processResult.getExitCode();
     } catch (IOException ex) {
@@ -278,7 +274,7 @@ public int killTensorBoard(BigInteger pid) {
    * @return
    */
   @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
-  public int killTensorBoard(TensorBoard tb) throws ServiceException {
+  public int killTensorBoard(TensorBoard tb) {
 
     String prog = settings.getHopsworksDomainDir() + "/bin/tensorboard.sh";
     int exitValue;
@@ -295,10 +291,8 @@ public int killTensorBoard(TensorBoard tb) throws ServiceException {
       ProcessResult processResult = osProcessExecutor.execute(processDescriptor);
       if (!processResult.processExited()) {
         LOGGER.log(Level.SEVERE, "Failed to kill TensorBoard, process time-out");
-        exitValue = 2;
       }
       exitValue = processResult.getExitCode();
-      cleanupLocalTBDir(tb);
     } catch (IOException ex) {
       exitValue=2;
       LOGGER.log(Level.SEVERE,"Failed to kill TensorBoard" , ex);
diff --git a/hopsworks-common/src/main/java/io/hops/hopsworks/common/security/CertificateMaterializer.java b/hopsworks-common/src/main/java/io/hops/hopsworks/common/security/CertificateMaterializer.java
index 2d684a4958..64c73d82c3 100644
--- a/hopsworks-common/src/main/java/io/hops/hopsworks/common/security/CertificateMaterializer.java
+++ b/hopsworks-common/src/main/java/io/hops/hopsworks/common/security/CertificateMaterializer.java
@@ -1124,7 +1124,6 @@ private boolean removeRemoteInternal(MaterialKey key, String remoteDirectory, bo
             remoteMaterialReferencesFacade.delete(materialRef.getIdentifier());
             deletedMaterial = true;
           } else {
-            materialRef.decrementReferences();
             remoteMaterialReferencesFacade.update(materialRef);
           }
         } else {
diff --git a/hopsworks-ear/test/spec/projects_spec.rb b/hopsworks-ear/test/spec/projects_spec.rb
index 1059ee61a2..dc52239fd9 100644
--- a/hopsworks-ear/test/spec/projects_spec.rb
+++ b/hopsworks-ear/test/spec/projects_spec.rb
@@ -90,11 +90,7 @@
           project_id = json_body[:projectId]
           get "#{ENV['HOPSWORKS_API']}/project/#{project_id}/dataset/getContent"
           expect_status(200)
-          jupyter = json_body.detect { |e| e[:name] == "Jupyter" }
           notebook = json_body.detect { |e| e[:name] == "notebook" }
-          expect(jupyter[:description]).to eq ("Contains Jupyter notebooks.")
-          expect(jupyter[:permission]).to eq ("rwxrwx--T")
-          expect(jupyter[:owner]).to eq ("#{@user[:fname]} #{@user[:lname]}")
           expect(notebook[:description]).to eq ("Contains Zeppelin notebooks.")
           expect(notebook[:permission]).to eq ("rwxrwx--T")
           expect(notebook[:owner]).to eq ("#{@user[:fname]} #{@user[:lname]}")