1 files changed, 27 insertions, 7 deletions

diff --git a/launcher/ui/pages/instance/ModFolderPage.cpp b/launcher/ui/pages/instance/ModFolderPage.cpp
index 14e1f1e5..1b2cde0c 100644
--- a/launcher/ui/pages/instance/ModFolderPage.cpp
+++ b/launcher/ui/pages/instance/ModFolderPage.cpp
@@ -84,18 +84,31 @@ ModFolderPage::ModFolderPage(BaseInstance* inst, std::shared_ptr<ModFolderModel>
         ui->actionsToolbar->insertActionAfter(ui->actionAddItem, ui->actionUpdateItem);
         connect(ui->actionUpdateItem, &QAction::triggered, this, &ModFolderPage::updateMods);
 
-        connect(ui->treeView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
-                [this] { ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty()); });
+        auto check_allow_update = [this] {
+            return (!m_instance || !m_instance->isRunning()) &&
+                   (ui->treeView->selectionModel()->hasSelection() || !m_model->empty());
+        };
 
-        connect(mods.get(), &ModFolderModel::rowsInserted, this,
-                [this] { ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty()); });
-                
-        connect(mods.get(), &ModFolderModel::updateFinished, this, [this, mods] {
-            ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty());
+        connect(ui->treeView->selectionModel(), &QItemSelectionModel::selectionChanged, this, [this, check_allow_update] {
+            ui->actionUpdateItem->setEnabled(check_allow_update());
+        });
+
+        connect(mods.get(), &ModFolderModel::rowsInserted, this, [this, check_allow_update] {
+            ui->actionUpdateItem->setEnabled(check_allow_update());
+        });
+
+        connect(mods.get(), &ModFolderModel::rowsRemoved, this, [this, check_allow_update] {
+            ui->actionUpdateItem->setEnabled(check_allow_update());
+        });
+
+        connect(mods.get(), &ModFolderModel::updateFinished, this, [this, check_allow_update, mods] {
+            ui->actionUpdateItem->setEnabled(check_allow_update());
 
             // Prevent a weird crash when trying to open the mods page twice in a session o.O
             disconnect(mods.get(), &ModFolderModel::updateFinished, this, 0);
         });
+
+        ModFolderPage::runningStateChanged(m_instance && m_instance->isRunning());
     }
 }
 
@@ -103,6 +116,13 @@ CoreModFolderPage::CoreModFolderPage(BaseInstance* inst, std::shared_ptr<ModFold
     : ModFolderPage(inst, mods, parent)
 {}
 
+void ModFolderPage::runningStateChanged(bool running)
+{
+    ExternalResourcesPage::runningStateChanged(running);
+    ui->actionDownloadItem->setEnabled(!running);
+    ui->actionUpdateItem->setEnabled(!running);
+}
+
 bool ModFolderPage::shouldDisplay() const
 {
     return true;