diff --git a/HelpersLib/UserControls/ExportImportControl.cs b/HelpersLib/UserControls/ExportImportControl.cs
index 0791288ff..c168a6bf0 100644
--- a/HelpersLib/UserControls/ExportImportControl.cs
+++ b/HelpersLib/UserControls/ExportImportControl.cs
@@ -210,6 +210,8 @@ private void tsmiImportURL_Click(object sender, EventArgs e)
 
                 if (!string.IsNullOrEmpty(url))
                 {
+                    btnImport.Enabled = false;
+
                     string json = null;
 
                     TaskEx.Run(() =>
@@ -219,6 +221,8 @@ private void tsmiImportURL_Click(object sender, EventArgs e)
                     () =>
                     {
                         Import(json);
+
+                        btnImport.Enabled = true;
                     });
                 }
             }
diff --git a/UploadersLib/UploadersLib.csproj b/UploadersLib/UploadersLib.csproj
index dca82cdb9..68925a5fc 100644
--- a/UploadersLib/UploadersLib.csproj
+++ b/UploadersLib/UploadersLib.csproj
@@ -84,9 +84,9 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Design" />
     <Reference Include="System.Drawing" />
-    <Reference Include="System.Net.FtpClient, Version=1.0.5268.24683, Culture=neutral, PublicKeyToken=fa4be07daa57c2b7, processorArchitecture=MSIL">
+    <Reference Include="System.Net.FtpClient, Version=1.0.5281.14359, Culture=neutral, PublicKeyToken=fa4be07daa57c2b7, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\packages\System.Net.FtpClient.1.0.5268.24683\lib\net40\System.Net.FtpClient.dll</HintPath>
+      <HintPath>..\packages\System.Net.FtpClient.1.0.5281.14359\lib\net40\System.Net.FtpClient.dll</HintPath>
     </Reference>
     <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.ServiceModel.Web" />
diff --git a/UploadersLib/packages.config b/UploadersLib/packages.config
index 9e3154198..84a407925 100644
--- a/UploadersLib/packages.config
+++ b/UploadersLib/packages.config
@@ -3,5 +3,5 @@
   <package id="MegaApiClient" version="1.0.4" targetFramework="net40" />
   <package id="Newtonsoft.Json" version="6.0.3" targetFramework="net40" />
   <package id="SSH.NET" version="2014.4.6-beta1" targetFramework="net40" />
-  <package id="System.Net.FtpClient" version="1.0.5268.24683" targetFramework="net40" />
+  <package id="System.Net.FtpClient" version="1.0.5281.14359" targetFramework="net40" />
 </packages>
\ No newline at end of file