diff --git a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
index 1fc39bf..8fb6370 100644
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -25,6 +25,7 @@
 import org.eclipse.jgit.errors.MissingObjectException
 import org.eclipse.jgit.lib._
 import org.eclipse.jgit.transport.{ReceiveCommand, ReceivePack}
+import org.json4s.jackson.Serialization
 import org.scalatra._
 import org.scalatra.i18n.Messages
 
@@ -166,7 +167,11 @@
   ajaxGet("/:owner/:repository/creating") {
     val owner = params("owner")
     val repository = params("repository")
-    RepositoryCreationService.isCreating(owner, repository)
+    contentType = formats("json")
+    Serialization.write(Map(
+      "creating" -> RepositoryCreationService.isCreating(owner, repository),
+      "error" -> RepositoryCreationService.getCreationError(owner, repository)
+    ))
   }
 
   /**
@@ -416,7 +421,7 @@
     contentType = formats("json")
     using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
       val last = git.log.add(git.getRepository.resolve(id)).addPath(path).setMaxCount(1).call.iterator.next.name
-      Map(
+      Serialization.write(Map(
         "root"  -> s"${context.baseUrl}/${repository.owner}/${repository.name}",
         "id"    -> id,
         "path"  -> path,
@@ -431,8 +436,9 @@
             "prevPath" -> blame.prevPath,
             "commited" -> blame.commitTime.getTime,
             "message"  -> blame.message,
-            "lines"    -> blame.lines)
-        })
+            "lines" -> blame.lines
+          )
+        }))
     }
   })
 
diff --git a/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala b/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala
index 9b5ef31..cdb3e59 100644
--- a/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala
@@ -19,18 +19,25 @@
 
 object RepositoryCreationService {
 
-  private val Creating = new ConcurrentHashMap[String, Boolean]()
+  private val Creating = new ConcurrentHashMap[String, Option[String]]()
 
   def isCreating(owner: String, repository: String): Boolean = {
-    Creating.containsKey(s"${owner}/${repository}")
+    Option(Creating.get(s"${owner}/${repository}")).map(_.isEmpty).getOrElse(false)
   }
 
   def startCreation(owner: String, repository: String): Unit = {
-    Creating.put(s"${owner}/${repository}", true)
+    Creating.put(s"${owner}/${repository}", None)
   }
 
-  def endCreation(owner: String, repository: String): Unit = {
-    Creating.remove(s"${owner}/${repository}")
+  def endCreation(owner: String, repository: String, error: Option[String]): Unit = {
+    error match {
+      case None => Creating.remove(s"${owner}/${repository}")
+      case Some(error) => Creating.put(s"${owner}/${repository}", Some(error))
+    }
+  }
+
+  def getCreationError(owner: String, repository: String): Option[String] = {
+    Option(Creating.get(s"${owner}/${repository}")).getOrElse(None)
   }
 
 }
@@ -51,6 +58,15 @@
         val ownerAccount = getAccountByUserName(owner).get
         val loginUserName = loginAccount.userName
 
+        val copyRepositoryDir = if (initOption == "COPY") {
+          sourceUrl.flatMap { url =>
+            val dir = Files.createTempDirectory(s"gitbucket-${owner}-${name}").toFile
+            Git.cloneRepository().setBare(true).setURI(url).setDirectory(dir).setCloneAllBranches(true).call()
+            Some(dir)
+          }
+        } else None
+
+
         // Insert to the database at first
         insertRepository(name, owner, description, isPrivate)
 
@@ -95,16 +111,12 @@
           }
         }
 
-        if (initOption == "COPY") {
-          sourceUrl.foreach { url =>
-            // TODO How to feedback error in this block?
-            val dir = Files.createTempDirectory(s"gitbucket-${owner}-${name}").toFile
-
-            Git.cloneRepository().setBare(true).setURI(url).setDirectory(dir).setCloneAllBranches(true).call()
+        copyRepositoryDir.foreach { dir =>
+          try {
             using(Git.open(dir)) { git =>
               git.push().setRemote(gitdir.toURI.toString).setPushAll().setPushTags().call()
             }
-
+          } finally {
             FileUtils.deleteQuietly(dir)
           }
         }
@@ -115,8 +127,14 @@
         // Record activity
         recordCreateRepositoryActivity(owner, name, loginUserName)
       }
-    } finally {
-      RepositoryCreationService.endCreation(owner, name)
+
+      RepositoryCreationService.endCreation(owner, name, None)
+
+    } catch {
+      case ex: Exception => {
+        ex.printStackTrace()
+        RepositoryCreationService.endCreation(owner, name, Some(ex.toString))
+      }
     }
   }
 
diff --git a/src/main/twirl/gitbucket/core/repo/creating.scala.html b/src/main/twirl/gitbucket/core/repo/creating.scala.html
index 7f695cf..8c4e753 100644
--- a/src/main/twirl/gitbucket/core/repo/creating.scala.html
+++ b/src/main/twirl/gitbucket/core/repo/creating.scala.html
@@ -16,10 +16,16 @@
 
   function checkCreating() {
     $.get('@context.path/@owner/@repository/creating', function (data) {
-      if (data == 'true') {
+      console.log(data);
+      if (data.creating == true) {
         setTimeout(checkCreating, 2000);
       } else {
-        location.href = '@context.path/@owner/@repository';
+        if (data.error) {
+          alert(data.error);
+          location.href = '@context.path/new';
+        } else {
+          location.href = '@context.path/@owner/@repository';
+        }
       }
     });
   }