BUG Fix installer for 4.0 (#1644)

code/Controllers/ContentController.php

@@ -453,7 +453,10 @@ HTML;
 
 		return array(
 			"Title" =>  _t("ContentController.INSTALL_SUCCESS", "Installation Successful!"),
-			"Content" => $data->renderWith('Install_successfullyinstalled'),
+			"Content" => $data->renderWith([
+				'type' => 'Includes',
+				'Install_successfullyinstalled'
+			]),
 		);
 	}
 

templates/Includes/Install_successfullyinstalled.ss

@@ -14,7 +14,7 @@
 </p>
 
 <div style="background:#fcf8f2; border-radius:4px; border: 1px solid #ffc28b; padding:5px; margin:5px;">
-	<img src="cms/client/dist/images/dialogs/alert.gif" style="border: none; margin-right: 10px; float: left; height:48px; width:48px" />
+	<img src="cms/client/dist/images/alert.gif" style="border: none; margin-right: 10px; float: left; height:48px; width:48px" />
 	<p style="color: #cb6a1c; margin-bottom:0;">
 	<%t ContentController.InstallSecurityWarning 'For security reasons you should now delete the install files, unless you are planning to reinstall later (<em>requires admin login, see above</em>). The web server also now only needs write access to the "assets" folder, you can remove write access from all other folders. <a href="{link}" style="text-align: center;">Click here to delete the install files.</a>' link="home/deleteinstallfiles" %>
 	</p>