Index: /lib/phpgirocode.class.php
===================================================================
--- /lib/phpgirocode.class.php	(revision 6804)
+++ /lib/phpgirocode.class.php	(revision 6806)
@@ -404,5 +404,5 @@
 			{
 				
-				$tmpfname = tempnam("/tmp", "phpgirocode");
+				$tmpfname = @tempnam("/tmp", "phpgirocode");
 				
 				QRcode::png($code, $tmpfname, $this->errCorrLevel, $this->qrsize);
Index: /mods/wpsg_mod_prepayment.class.php
===================================================================
--- /mods/wpsg_mod_prepayment.class.php	(revision 6804)
+++ /mods/wpsg_mod_prepayment.class.php	(revision 6806)
@@ -262,5 +262,8 @@
 
 			} else if ($out == PhpGirocode::OUTPUT_BASE64) {
-				$tmpfname = tempnam("/tmp", "phpgirocode");
+				
+				//error_reporting(E_ALL & ~E_NOTICE);
+				$tmpfname = @tempnam("/tmp", "phpgirocode");
+				
 				$ret = $phpGiroCode->generate(PhpGirocode::OUTPUT_BASE64, $tmpfname);
 				//$ret = base64_encode(file_get_contents($tmpfname));