Version 4.7.13

system/File/Amazon.php

@@ -546,12 +546,11 @@ class _Amazon extends \IPS\File
 	 */
 	public function chunkInit( $filename, $container = '', $obscure = TRUE )
 	{
-		$container = trim( $container, '/' );
-
+		$container = $container ? trim( $container, '/' ) : $this->container;
 		$this->setFilename( $filename, $obscure );
 
-		$path = $this->container ? "{$this->container}/{$this->filename}" : "{$this->filename}";
-		
+		$path = $container ? "{$container}/{$this->filename}" : "{$this->filename}";
+
 		$r = static::makeRequest( $path, 'POST', $this->configuration, $this->configurationId, NULL, NULL, FALSE, FALSE, array( 'uploads' => '' ) );
 		$uploadId = (string) $r->decodeXml()->UploadId;