diff --git a/src/slic3r/GUI/ImageGrid.cpp b/src/slic3r/GUI/ImageGrid.cpp
index f3493d704..67f436229 100644
--- a/src/slic3r/GUI/ImageGrid.cpp
+++ b/src/slic3r/GUI/ImageGrid.cpp
@@ -8,6 +8,9 @@
 
 #include <wx/dcgraph.h>
 
+#ifdef __WXMSW__
+#include <shellapi.h>
+#endif
 #ifdef __APPLE__
 #include "../Utils/MacDarkMode.hpp"
 #endif
@@ -149,8 +152,15 @@ void Slic3r::GUI::ImageGrid::DoAction(size_t index, int action)
             auto &file = m_file_sys->GetFile(index);
             if (file.IsDownload() && file.progress >= -1) {
                 if (file.progress >= 100) {
+                    if (!m_file_sys->DownloadCheckFile(index)) {
+                        wxMessageBox(wxString::Format(_L("File '%s' was lost! Please download it again."), from_u8(file.name)), _L("Error"), wxOK);
+                        Refresh();
+                        return;
+                    }
 #ifdef __WXMSW__
-                    wxExecute("cmd /c start " + from_u8(file.path), wxEXEC_HIDE_CONSOLE);
+                    auto wfile = boost::filesystem::path(file.path).wstring();
+                    SHELLEXECUTEINFO info{sizeof(info), 0, NULL, L"open", wfile.c_str(), L"", SW_HIDE};
+                    ::ShellExecuteEx(&info);
 #else
                     wxShell("open " + file.path);
 #endif
@@ -166,6 +176,11 @@ void Slic3r::GUI::ImageGrid::DoAction(size_t index, int action)
             auto &file = m_file_sys->GetFile(index);
             if (file.IsDownload() && file.progress >= -1) {
                 if (file.progress >= 100) {
+                    if (!m_file_sys->DownloadCheckFile(index)) {
+                        wxMessageBox(wxString::Format(_L("File '%s' was lost! Please download it again."), from_u8(file.name)), _L("Error"), wxOK);
+                        Refresh();
+                        return;
+                    }
 #ifdef __WIN32__
                     wxExecute(L"explorer.exe /select," + from_u8(file.path));
 #elif __APPLE__
diff --git a/src/slic3r/GUI/Printer/PrinterFileSystem.cpp b/src/slic3r/GUI/Printer/PrinterFileSystem.cpp
index 1f9ef376c..8206c110b 100644
--- a/src/slic3r/GUI/Printer/PrinterFileSystem.cpp
+++ b/src/slic3r/GUI/Printer/PrinterFileSystem.cpp
@@ -111,6 +111,7 @@ void PrinterFileSystem::ListAllFiles()
                 iter1->thumbnail = iter2->thumbnail;
                 iter1->flags = iter2->flags;
                 iter1->progress = iter2->progress;
+                iter1->path = iter2->path;
                 ++iter1; ++iter2;
             } else if (*iter1 < *iter2) {
                 ++iter1;
@@ -196,6 +197,21 @@ void PrinterFileSystem::DownloadCheckFiles(std::string const &path)
     }
 }
 
+bool PrinterFileSystem::DownloadCheckFile(size_t index)
+{
+    if (index >= m_file_list.size()) return false;
+    auto &file = m_file_list[index];
+    if ((file.flags & FF_DOWNLOAD) == 0) return false;
+    if (!boost::filesystem::exists(file.path)) {
+        file.flags &= ~FF_DOWNLOAD;
+        file.progress = 0;
+        file.path.clear();
+        SendChangedEvent(EVT_DOWNLOAD, index, file.path);
+        return false;
+    }
+    return true;
+}
+
 void PrinterFileSystem::DownloadCancel(size_t index)
 {
     if (index == (size_t) -1) return;
diff --git a/src/slic3r/GUI/Printer/PrinterFileSystem.h b/src/slic3r/GUI/Printer/PrinterFileSystem.h
index 886bc67e5..775721621 100644
--- a/src/slic3r/GUI/Printer/PrinterFileSystem.h
+++ b/src/slic3r/GUI/Printer/PrinterFileSystem.h
@@ -128,6 +128,8 @@ public:
 
     void DownloadCheckFiles(std::string const &path);
 
+    bool DownloadCheckFile(size_t index);
+
     void DownloadCancel(size_t index);
 
     size_t GetCount() const;
diff --git a/src/slic3r/GUI/wxMediaCtrl2.cpp b/src/slic3r/GUI/wxMediaCtrl2.cpp
index 6d92c6eb2..a4d2bed12 100644
--- a/src/slic3r/GUI/wxMediaCtrl2.cpp
+++ b/src/slic3r/GUI/wxMediaCtrl2.cpp
@@ -54,6 +54,8 @@ void wxMediaCtrl2::Load(wxURI url)
         wxRegKey key2(wxRegKey::HKCR, "bambu");
         wxString clsid;
         key2.QueryRawValue("Source Filter", clsid);
+        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(": clsid %1% path %2%") % clsid % path;
+
         if (path.empty() || !wxFile::Exists(path) || clsid != CLSID_BAMBU_SOURCE) {
             if (clsid != CLSID_BAMBU_SOURCE || path.empty()) {
                 std::string             data_dir_str = Slic3r::data_dir();