diff --git a/plugins/Toolbox/src/Toolbox.py b/plugins/Toolbox/src/Toolbox.py
index e540bce523..b9e7f8f94d 100644
--- a/plugins/Toolbox/src/Toolbox.py
+++ b/plugins/Toolbox/src/Toolbox.py
@@ -28,7 +28,8 @@ i18n_catalog = i18nCatalog("cura")
 ##  The Toolbox class is responsible of communicating with the server through the API
 class Toolbox(QObject, Extension):
 
-    DEFAULT_PACKAGES_API_ROOT = "https://api.ultimaker.com"
+    DEFAULT_CLOUD_API_ROOT = "https://api.ultimaker.com"
+    DEFAULT_CLOUD_API_VERSION = 1
 
     def __init__(self, parent=None) -> None:
         super().__init__(parent)
@@ -37,16 +38,10 @@ class Toolbox(QObject, Extension):
         self._package_manager = None
         self._plugin_registry = Application.getInstance().getPluginRegistry()
 
-        self._sdk_version = self._getPackagesVersion()
-
-        self._cloud_api_version = 1
-        self._cloud_api_root = self._getPackagesApiRoot()
-
-        self._api_url = "{cloud_api_root}/cura-packages/v{cloud_api_version}/cura/v{sdk_version}".format(
-            cloud_api_root = self._cloud_api_root,
-            cloud_api_version = self._cloud_api_version,
-            sdk_version = self._sdk_version
-        )
+        self._sdk_version = None
+        self._cloud_api_version = None
+        self._cloud_api_root = None
+        self._api_url = None
 
         # Network:
         self._get_packages_request = None
@@ -67,12 +62,7 @@ class Toolbox(QObject, Extension):
                 )
             )
         ]
-        self._request_urls = {
-            "authors":            QUrl("{base_url}/authors".format(base_url = self._api_url)),
-            "packages":           QUrl("{base_url}/packages".format(base_url = self._api_url)),
-            "plugins_showcase":   QUrl("{base_url}/showcase".format(base_url = self._api_url)),
-            "materials_showcase": QUrl("{base_url}/showcase".format(base_url = self._api_url))
-        }
+        self._request_urls = {}
         self._to_update = []  # Package_ids that are waiting to be updated
 
         # Data:
@@ -164,22 +154,44 @@ class Toolbox(QObject, Extension):
     # this is initialized. Therefore, we wait until the application is ready.
     def _onAppInitialized(self) -> None:
         self._package_manager = Application.getInstance().getCuraPackageManager()
+        self._sdk_version = self._getSDKVersion()
+        self._cloud_api_version = self._getCloudAPIVersion()
+        self._cloud_api_root = self._getCloudAPIRoot()
+        self._api_url = "{cloud_api_root}/cura-packages/v{cloud_api_version}/cura/v{sdk_version}".format(
+            cloud_api_root=self._cloud_api_root,
+            cloud_api_version=self._cloud_api_version,
+            sdk_version=self._sdk_version
+        )
+        self._request_urls = {
+            "authors": QUrl("{base_url}/authors".format(base_url=self._api_url)),
+            "packages": QUrl("{base_url}/packages".format(base_url=self._api_url)),
+            "plugins_showcase": QUrl("{base_url}/showcase".format(base_url=self._api_url)),
+            "materials_showcase": QUrl("{base_url}/showcase".format(base_url=self._api_url))
+        }
 
     # Get the API root for the packages API depending on Cura version settings.
-    def _getPackagesApiRoot(self) -> str:
+    def _getCloudAPIRoot(self) -> str:
         if not hasattr(cura, "CuraVersion"):
-            return self.DEFAULT_PACKAGES_API_ROOT
-        if not hasattr(cura.CuraVersion, "CuraPackagesApiRoot"):
-            return self.DEFAULT_PACKAGES_API_ROOT
-        return cura.CuraVersion.CuraPackagesApiRoot
+            return self.DEFAULT_CLOUD_API_ROOT
+        if not hasattr(cura.CuraVersion, "CuraCloudAPIRoot"):
+            return self.DEFAULT_CLOUD_API_ROOT
+        return cura.CuraVersion.CuraCloudAPIRoot
+
+    # Get the cloud API version from CuraVersion
+    def _getCloudAPIVersion(self) -> int:
+        if not hasattr(cura, "CuraVersion"):
+            return self.DEFAULT_CLOUD_API_VERSION
+        if not hasattr(cura.CuraVersion, "CuraCloudAPIVersion"):
+            return self.DEFAULT_CLOUD_API_VERSION
+        return cura.CuraVersion.CuraCloudAPIVersion
 
     # Get the packages version depending on Cura version settings.
-    def _getPackagesVersion(self) -> int:
+    def _getSDKVersion(self) -> int:
         if not hasattr(cura, "CuraVersion"):
             return self._plugin_registry.APIVersion
-        if not hasattr(cura.CuraVersion, "CuraPackagesVersion"):
+        if not hasattr(cura.CuraVersion, "CuraSDKVersion"):
             return self._plugin_registry.APIVersion
-        return cura.CuraVersion.CuraPackagesVersion
+        return cura.CuraVersion.CuraSDKVersion
 
     @pyqtSlot()
     def browsePackages(self) -> None:
diff --git a/resources/qml/Cura.qml b/resources/qml/Cura.qml
index e1cc4f6e45..b8f289278c 100644
--- a/resources/qml/Cura.qml
+++ b/resources/qml/Cura.qml
@@ -323,10 +323,11 @@ UM.MainWindow
                 {
                     if (drop.urls.length > 0)
                     {
-                        // As the drop area also supports plugins, first check if it's a plugin that was dropped.
-                        if (drop.urls.length == 1)
+
+                        var nonPackages = [];
+                        for (var i = 0; i < drop.urls.length; i++)
                         {
-                            var filename = drop.urls[0];
+                            var filename = drop.urls[i];
                             if (filename.endsWith(".curapackage"))
                             {
                                 // Try to install plugin & close.
@@ -334,11 +335,13 @@ UM.MainWindow
                                 packageInstallDialog.text = catalog.i18nc("@label", "This package will be installed after restarting.");
                                 packageInstallDialog.icon = StandardIcon.Information;
                                 packageInstallDialog.open();
-                                return;
+                            }
+                            else
+                            {
+                                others.push(filename);
                             }
                         }
-
-                        openDialog.handleOpenFileUrls(drop.urls);
+                        openDialog.handleOpenFileUrls(nonPackages);
                     }
                 }
             }