diff --git a/AssetStudioFBX/AssetStudioFBXExporter.cpp b/AssetStudioFBX/AssetStudioFBXExporter.cpp
index 55d752b..c272748 100644
--- a/AssetStudioFBX/AssetStudioFBXExporter.cpp
+++ b/AssetStudioFBX/AssetStudioFBXExporter.cpp
@@ -552,7 +552,7 @@ namespace AssetStudio
 							lGeometryElementTangent->GetDirectArray().Add(FbxVector4(tangent.X, tangent.Y, tangent.Z, -tangent.W));
 						}
 
-						if (hasBones)
+						if (hasBones && vertex->BoneIndices != nullptr)
 						{
 							array<unsigned char>^ boneIndices = vertex->BoneIndices;
 							array<float>^ weights4 = vertex->Weights;
diff --git a/AssetStudioGUI/Studio.cs b/AssetStudioGUI/Studio.cs
index f10c593..95e7f87 100644
--- a/AssetStudioGUI/Studio.cs
+++ b/AssetStudioGUI/Studio.cs
@@ -509,7 +509,7 @@ namespace AssetStudioGUI
                         }
                         catch (Exception ex)
                         {
-                            MessageBox.Show($"{ex.Message}\r\n{ex.StackTrace}");
+                            MessageBox.Show($"Export GameObject:{j.Text} error\r\n{ex.Message}\r\n{ex.StackTrace}");
                         }
 
                         Progress.Report(++k, count);
@@ -541,7 +541,7 @@ namespace AssetStudioGUI
                 }
                 catch (Exception ex)
                 {
-                    MessageBox.Show($"{ex.Message}\r\n{ex.StackTrace}");
+                    MessageBox.Show($"Export Animator:{animator.Text} error\r\n{ex.Message}\r\n{ex.StackTrace}");
                     Logger.Info("Error in export");
                 }
             });
@@ -568,7 +568,7 @@ namespace AssetStudioGUI
                         }
                         catch (Exception ex)
                         {
-                            MessageBox.Show($"{ex.Message}\r\n{ex.StackTrace}");
+                            MessageBox.Show($"Export GameObject:{gameObject.m_Name} error\r\n{ex.Message}\r\n{ex.StackTrace}");
                             Logger.Info("Error in export");
                         }