Version 4.7.23

system/Theme/Cache/Template.php

@@ -87,12 +87,18 @@ class _Template extends \IPS\Theme\Template
 			try
 			{
 				$f = fopen( static::$file, 'r' );
+
+				if( $f === FALSE )
+				{
+					throw new \RuntimeException();
+				}
+
 				flock( $f, LOCK_SH );
 				include_once( static::$file );
 				flock( $f, LOCK_UN );
 				fclose( $f );
 			}
-			catch( \ParseError $e )
+			catch( \ParseError | \RuntimeException )
 			{
 				@unlink( static::$file );