diff --git a/src/Console/Storage.php b/src/Console/Storage.php
index d0a2a66637..a048d74ff8 100644
--- a/src/Console/Storage.php
+++ b/src/Console/Storage.php
@@ -23,6 +23,7 @@ namespace Friendica\Console;
 
 use Asika\SimpleConsole\CommandArgsException;
 use Friendica\Core\StorageManager;
+use Friendica\Model\Storage\StorageException;
 
 /**
  * tool to manage storage backend and stored data from CLI
@@ -165,6 +166,10 @@ HELP;
 		$current = $this->storageManager->getBackend();
 		$total = 0;
 
+		if (is_null($current)) {
+			throw new StorageException(sprintf("Cannot move to legacy storage. Please select a storage backend."));
+		}
+
 		do {
 			$moved = $this->storageManager->move($current, $tables, $this->getOption('n', 5000));
 			if ($moved) {
diff --git a/src/Core/StorageManager.php b/src/Core/StorageManager.php
index c8385783e9..6fadcb52bc 100644
--- a/src/Core/StorageManager.php
+++ b/src/Core/StorageManager.php
@@ -305,13 +305,13 @@ class StorageManager
 					$data = $source->get($sourceRef);
 				}
 
-				$this->logger->info('Save data to new backend.', ['newBackend' => $destination]);
+				$this->logger->info('Save data to new backend.', ['newBackend' => $destination::getName()]);
 				$destinationRef = $destination->put($data);
 				$this->logger->info('Saved data.', ['newReference' => $destinationRef]);
 
 				if ($destinationRef !== '') {
 					$this->logger->info('update row');
-					if ($this->dba->update($table, ['backend-class' => $destination, 'backend-ref' => $destinationRef, 'data' => ''], ['id' => $id])) {
+					if ($this->dba->update($table, ['backend-class' => $destination::getName(), 'backend-ref' => $destinationRef, 'data' => ''], ['id' => $id])) {
 						if (!empty($source)) {
 							$this->logger->info('Delete data from old backend.', ['oldBackend' => $source, 'oldReference' => $sourceRef]);
 							$source->delete($sourceRef);
diff --git a/src/Module/Install.php b/src/Module/Install.php
index 95644ae625..2a9bab81ec 100644
--- a/src/Module/Install.php
+++ b/src/Module/Install.php
@@ -26,6 +26,7 @@ use Friendica\BaseModule;
 use Friendica\Core;
 use Friendica\Core\Config\Cache;
 use Friendica\Core\Renderer;
+use Friendica\Core\Theme;
 use Friendica\DI;
 use Friendica\Network\HTTPException;
 use Friendica\Util\BasePath;
@@ -162,6 +163,16 @@ class Install extends BaseModule
 				}
 
 				self::$installer->installDatabase($configCache->get('system', 'basepath'));
+			
+				// install allowed themes to register theme hooks
+				// this is same as "Reload active theme" in /admin/themes
+				$allowed_themes = Theme::getAllowedList();
+				$allowed_themes = array_unique($allowed_themes);
+				foreach ($allowed_themes as $theme) {
+					Theme::uninstall($theme);
+					Theme::install($theme);
+				}
+				Theme::setAllowedList($allowed_themes);
 
 				break;
 		}
diff --git a/src/Module/Proxy.php b/src/Module/Proxy.php
index 10ddd56334..735048a867 100644
--- a/src/Module/Proxy.php
+++ b/src/Module/Proxy.php
@@ -127,13 +127,16 @@ class Proxy extends BaseModule
 		}
 
 		$basepath = $a->getBasePath();
+		$filepermission = DI::config()->get('system', 'proxy_file_chmod');
 
 		// Store original image
 		if ($direct_cache) {
 			// direct cache , store under ./proxy/
 			$filename = $basepath . '/proxy/' . ProxyUtils::proxifyUrl($request['url'], true);
 			file_put_contents($filename, $image->asString());
-			chmod($filename, DI::config()->get('system', 'proxy_file_chmod'));
+			if (!empty($filepermission)) {
+				chmod($filename, $filepermission);
+			}
 		} elseif($cachefile !== '') {
 			// cache file
 			file_put_contents($cachefile, $image->asString());
@@ -153,7 +156,9 @@ class Proxy extends BaseModule
 		if ($direct_cache && $request['sizetype'] != '') {
 			$filename = $basepath . '/proxy/' . ProxyUtils::proxifyUrl($request['url'], true) . $request['sizetype'];
 			file_put_contents($filename, $image->asString());
-			chmod($filename, DI::config()->get('system', 'proxy_file_chmod'));
+			if (!empty($filepermission)) {
+				chmod($filename, $filepermission);
+			}
 		}
 
 		self::responseImageHttpCache($image);
diff --git a/static/defaults.config.php b/static/defaults.config.php
index b075db36a0..2edb135074 100644
--- a/static/defaults.config.php
+++ b/static/defaults.config.php
@@ -571,9 +571,9 @@ return [
 		// Timeout in seconds for fetching the XRD links.
 		'xrd_timeout' => 20,
 
-		// proxy_file_chmod (Integer)
-		// Access rights for downloaded files in /proxy/ directory
-		'proxy_file_chmod' => 0640,
+		// proxy_file_chmod (Octal Integer like 0640)
+		// If set, defines the files permissions for downloaded files in the /proxy/ directory, default is system-dependent
+		'proxy_file_chmod' => 0,
 	],
 	'experimental' => [
 		// exp_themes (Boolean)