2 files changed, 11 insertions, 4 deletions
diff --git a/phpBB/phpbb/captcha/plugins/qa.php b/phpBB/phpbb/captcha/plugins/qa.php
index 70b3f72cc3..966b8d32f2 100644
--- a/phpBB/phpbb/captcha/plugins/qa.php
+++ b/phpBB/phpbb/captcha/plugins/qa.php
@@ -21,7 +21,7 @@ class qa
 {
 	var $confirm_id;
 	var $answer;
-	var $question_ids;
+	var $question_ids = [];
 	var $question_text;
 	var $question_lang;
 	var $question_strict;
diff --git a/phpBB/phpbb/event/md_exporter.php b/phpBB/phpbb/event/md_exporter.php
index c3942bd7ce..1a2d7c989e 100644
--- a/phpBB/phpbb/event/md_exporter.php
+++ b/phpBB/phpbb/event/md_exporter.php
@@ -389,9 +389,16 @@ class md_exporter
 			$files = explode("\n    + ", $file_details);
 			foreach ($files as $file)
 			{
+				if (!preg_match('#^([^ ]+)( \([0-9]+\))?$#', $file))
+				{
+					throw new \LogicException("Invalid event instances for file '{$file}' found for event '{$this->current_event}'", 1);
+				}
+
+				list($file) = explode(" ", $file);
+
 				if (!file_exists($this->path . $file) || substr($file, -5) !== '.html')
 				{
-					throw new \LogicException("Invalid file '{$file}' not found for event '{$this->current_event}'", 1);
+					throw new \LogicException("Invalid file '{$file}' not found for event '{$this->current_event}'", 2);
 				}
 
 				if (($this->filter !== 'adm') && strpos($file, 'styles/prosilver/template/') === 0)
@@ -404,7 +411,7 @@ class md_exporter
 				}
 				else
 				{
-					throw new \LogicException("Invalid file '{$file}' not found for event '{$this->current_event}'", 2);
+					throw new \LogicException("Invalid file '{$file}' not found for event '{$this->current_event}'", 3);
 				}
 
 				$this->events_by_file[$file][] = $this->current_event;
@@ -424,7 +431,7 @@ class md_exporter
 		}
 		else
 		{
-			throw new \LogicException("Invalid file list found for event '{$this->current_event}'", 2);
+			throw new \LogicException("Invalid file list found for event '{$this->current_event}'", 1);
 		}
 
 		return $files_list;