diff --git a/core/.gitignore b/core/.gitignore
new file mode 100644
index 0000000..8fca34b
--- /dev/null
+++ b/core/.gitignore
@@ -0,0 +1 @@
+TemplateCache
\ No newline at end of file
diff --git a/core/Api/Parameter/Parameter.class.php b/core/Api/Parameter/Parameter.class.php
index 06e4ac8..167322e 100644
--- a/core/Api/Parameter/Parameter.class.php
+++ b/core/Api/Parameter/Parameter.class.php
@@ -104,11 +104,11 @@ class Parameter {
       return Parameter::TYPE_BOOLEAN;
     else if(is_a($value, 'DateTime'))
       return Parameter::TYPE_DATE_TIME;
-    else if(($d = DateTime::createFromFormat(self::DATE_FORMAT, $value)) && $d->format(self::DATE_FORMAT) === $value)
+    else if($value !== null && ($d = DateTime::createFromFormat(self::DATE_FORMAT, $value)) && $d->format(self::DATE_FORMAT) === $value)
       return Parameter::TYPE_DATE;
-    else if(($d = DateTime::createFromFormat(self::TIME_FORMAT, $value)) && $d->format(self::TIME_FORMAT) === $value)
+    else if($value !== null && ($d = DateTime::createFromFormat(self::TIME_FORMAT, $value)) && $d->format(self::TIME_FORMAT) === $value)
       return Parameter::TYPE_TIME;
-    else if(($d = DateTime::createFromFormat(self::DATE_TIME_FORMAT, $value)) && $d->format(self::DATE_TIME_FORMAT) === $value)
+    else if($value !== null && ($d = DateTime::createFromFormat(self::DATE_TIME_FORMAT, $value)) && $d->format(self::DATE_TIME_FORMAT) === $value)
       return Parameter::TYPE_DATE_TIME;
     else if (filter_var($value, FILTER_VALIDATE_EMAIL))
       return Parameter::TYPE_EMAIL;
diff --git a/core/Api/UserAPI.class.php b/core/Api/UserAPI.class.php
index 121c966..14d6b9c 100644
--- a/core/Api/UserAPI.class.php
+++ b/core/Api/UserAPI.class.php
@@ -67,11 +67,11 @@ namespace Api {
         $this->checkPasswordRequirements($password, $confirmPassword);
     }
 
-    protected function insertUser($username, $email, $password, $confirmed, $fullName = null) {
+    protected function insertUser($username, $email, $password, $confirmed, $fullName = "") {
       $sql = $this->user->getSQL();
       $hash = $this->hashPassword($password);
       $res = $sql->insert("User", array("name", "password", "email", "confirmed", "fullName"))
-        ->addRow($username, $hash, $email, $confirmed, $fullName)
+        ->addRow($username, $hash, $email, $confirmed, $fullName ?? "")
         ->returning("uid")
         ->execute();
 
diff --git a/core/Configuration/CreateDatabase.class.php b/core/Configuration/CreateDatabase.class.php
index 61696ad..de7a0e1 100644
--- a/core/Configuration/CreateDatabase.class.php
+++ b/core/Configuration/CreateDatabase.class.php
@@ -27,6 +27,24 @@ class CreateDatabase extends DatabaseScript {
       ->addRow("en_US", 'American English')
       ->addRow("de_DE", 'Deutsch Standard');
 
+
+    $queries[] = $sql->createTable("GpgKey")
+      ->addSerial("uid")
+      ->addString("fingerprint", 64)
+      ->addDateTime("added", false, $sql->now())
+      ->addDateTime("expires")
+      ->addBool("confirmed")
+      ->addString("algorithm", 32)
+      ->primaryKey("uid");
+
+    $queries[] = $sql->createTable("2FA")
+      ->addSerial("uid")
+      ->addEnum("type", ["totp","fido"])
+      ->addString("data", 512) // either totp secret, fido challenge or fido public key information
+      ->addBool("confirmed", false)
+      ->addDateTime("added", false, $sql->now())
+      ->primaryKey("uid");
+
     $queries[] = $sql->createTable("User")
       ->addSerial("uid")
       ->addString("email", 64, true)
@@ -210,23 +228,6 @@ class CreateDatabase extends DatabaseScript {
       ->primaryKey("uid");
     $queries = array_merge($queries, \Configuration\Patch\log::createTableLog($sql, "MailQueue", 30));
 
-    $queries[] = $sql->createTable("GpgKey")
-      ->addSerial("uid")
-      ->addString("fingerprint", 64)
-      ->addDateTime("added", false, $sql->now())
-      ->addDateTime("expires")
-      ->addBool("confirmed")
-      ->addString("algorithm", 32)
-      ->primaryKey("uid");
-
-    $queries[] = $sql->createTable("2FA")
-      ->addSerial("uid")
-      ->addEnum("type", ["totp","fido"])
-      ->addString("data", 512) // either totp secret, fido challenge or fido public key information
-      ->addBool("confirmed", false)
-      ->addDateTime("added", false, $sql->now())
-      ->primaryKey("uid");
-
     $queries[] = $sql->createTable("News")
       ->addSerial("uid")
       ->addInt("publishedBy")
diff --git a/core/Documents/Install.class.php b/core/Documents/Install.class.php
index 37ac920..b545407 100644
--- a/core/Documents/Install.class.php
+++ b/core/Documents/Install.class.php
@@ -17,6 +17,9 @@ namespace Documents {
 namespace Documents\Install {
 
   use Configuration\CreateDatabase;
+  use Driver\SQL\Query\Commit;
+  use Driver\SQL\Query\RollBack;
+  use Driver\SQL\Query\StartTransaction;
   use Driver\SQL\SQL;
   use Elements\Body;
   use Elements\Head;
@@ -271,10 +274,21 @@ namespace Documents\Install {
           $msg = "";
           $success = true;
           $queries = CreateDatabase::createQueries($sql);
+          array_unshift($queries, new StartTransaction($sql));
+          $queries[] = new Commit($sql);
           foreach ($queries as $query) {
-            if (!($res = $query->execute())) {
-              $msg = "Error creating tables: " . $sql->getLastError();
-              $success = false;
+            try {
+              if (!$query->execute()) {
+                $msg = "Error creating tables: " . $sql->getLastError();
+                $success = false;
+              }
+            } finally {
+              if (!$success) {
+                (new RollBack($sql))->execute();
+              }
+            }
+
+            if (!$success) {
               break;
             }
           }
@@ -619,7 +633,7 @@ namespace Documents\Install {
             )),
             array(
               "title" => "Encoding", "name" => "encoding", "type" => "text", "required" => false,
-              "value" => "UTF-8"
+              "value" => "UTF8"
             ),
           )
         ),
diff --git a/core/Driver/SQL/Query/Commit.class.php b/core/Driver/SQL/Query/Commit.class.php
new file mode 100644
index 0000000..a6b9c34
--- /dev/null
+++ b/core/Driver/SQL/Query/Commit.class.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Driver\SQL\Query;
+
+use Driver\SQL\SQL;
+
+class Commit extends Query {
+  public function __construct(SQL $sql) {
+    parent::__construct($sql);
+  }
+
+  public function build(array &$params): ?string {
+    return "COMMIT";
+  }
+}
\ No newline at end of file
diff --git a/core/Driver/SQL/Query/RollBack.class.php b/core/Driver/SQL/Query/RollBack.class.php
new file mode 100644
index 0000000..b2c8b72
--- /dev/null
+++ b/core/Driver/SQL/Query/RollBack.class.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Driver\SQL\Query;
+
+use Driver\SQL\SQL;
+
+class RollBack extends Query {
+  public function __construct(SQL $sql) {
+    parent::__construct($sql);
+  }
+
+  public function build(array &$params): ?string {
+    return "ROLLBACK";
+  }
+}
\ No newline at end of file
diff --git a/core/Driver/SQL/Query/StartTransaction.class.php b/core/Driver/SQL/Query/StartTransaction.class.php
new file mode 100644
index 0000000..753bceb
--- /dev/null
+++ b/core/Driver/SQL/Query/StartTransaction.class.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Driver\SQL\Query;
+
+use Driver\SQL\SQL;
+
+class StartTransaction extends Query {
+  public function __construct(SQL $sql) {
+    parent::__construct($sql);
+  }
+
+  public function build(array &$params): ?string {
+    return "START TRANSACTION";
+  }
+}
\ No newline at end of file
diff --git a/core/core.php b/core/core.php
index 2d413fe..b0bb02f 100644
--- a/core/core.php
+++ b/core/core.php
@@ -2,7 +2,7 @@
 
 require_once "External/vendor/autoload.php";
 
-define("WEBBASE_VERSION", "1.4.0");
+define("WEBBASE_VERSION", "1.4.1");
 
 spl_autoload_extensions(".php");
 spl_autoload_register(function($class) {