diff --git a/saas-app/public/install.php b/saas-app/public/install.php
index d4cb456..2f3dcea 100644
--- a/saas-app/public/install.php
+++ b/saas-app/public/install.php
@@ -16,6 +16,8 @@ if (!is_file($bootstrapPath)) {
 
 require_once $bootstrapPath;
 
+clearstatcache();
+
 $requestMethod = $_SERVER['REQUEST_METHOD'] ?? 'GET';
 
 if (isset($_GET['download']) && $_GET['download'] === 'bundle' && is_file(scripts_bundle_output_path())) {
@@ -56,6 +58,9 @@ $errors = [];
 $executedMigrations = [];
 $bundlePath = is_file(scripts_bundle_output_path()) ? scripts_bundle_output_path() : null;
 $locked = scripts_installer_is_locked();
+$saasAppPath = scripts_saas_app_path();
+$saasAppVisible = is_dir($saasAppPath);
+$openBaseDir = (string) ini_get('open_basedir');
 $envPathState = scripts_path_writable_state(scripts_env_path());
 $lockPathState = scripts_path_writable_state(scripts_installer_lock_path());
 $bundlePathState = scripts_path_writable_state(scripts_bundle_output_path());
@@ -123,6 +128,9 @@ if ($requestMethod === 'POST' && !$locked) {
                 } elseif (scripts_string_contains($message, '.env')) {
                     $errors[] = 'Die Konfiguration konnte nicht gespeichert werden. Zielpfad: ' . scripts_env_path();
                     $errors[] = 'Status fuer .env: ' . scripts_path_state_label($envPathState) . '. Elternordner: ' . $envPathState['parent'];
+                    if (!$saasAppVisible) {
+                        $errors[] = 'PHP kann den SaaS-App-Ordner nicht lesen. Bitte Rechte, Document-Root und `open_basedir` pruefen.';
+                    }
                 } else {
                     $errors[] = 'Die Installation konnte nicht abgeschlossen werden. Bitte Eingaben, DB-Zugang und Dateirechte pruefen.';
                 }
@@ -441,6 +449,9 @@ function h(string $value): string
             <h2>Status</h2>
             <ul class="status-list">
                 <li>PHP Version: <code><?= h(PHP_VERSION) ?></code></li>
+                <li>SaaS-App Pfad: <code><?= h($saasAppPath) ?></code></li>
+                <li>SaaS-App sichtbar: <code><?= $saasAppVisible ? 'ja' : 'nein' ?></code></li>
+                <li>open_basedir: <code><?= h($openBaseDir !== '' ? $openBaseDir : 'nicht gesetzt') ?></code></li>
                 <li>.env.example: <code><?= is_file(scripts_env_example_path()) ? 'vorhanden' : 'fehlt' ?></code></li>
                 <li>.env: <code><?= is_file(scripts_env_path()) ? 'vorhanden' : 'fehlt' ?></code></li>
                 <li>.env Status: <code><?= h(scripts_path_state_label($envPathState)) ?></code></li>