Fix crash when no render profiles

svn path=/trunk/kdenlive/; revision=4081

diff --git a/src/renderwidget.cpp b/src/renderwidget.cpp
index 8af8002bb702dad3cd7d6bcbd8b484fb154bb409..2a4ce736286564d8032e1d2b26e29ec18d67f720 100644 (file)
--- a/src/renderwidget.cpp
+++ b/src/renderwidget.cpp
@@ -294,6 +294,10 @@ void RenderWidget::slotUpdateButtons(KUrl url)
     }
     if (url != 0) {
         QListWidgetItem *item = m_view.size_list->currentItem();
+       if (!item) {
+           m_view.buttonStart->setEnabled(false);
+           return;
+       }  
         QString extension = item->data(ExtensionRole).toString();
         url = filenameWithExtension(url, extension);
         m_view.out_file->setUrl(url);