Ah well if i do it myself on the commandline it works rename test.jpg test.jpg_original so the permissions should be oke unless the program is run as a different user.. but then cacls says BUILTIN\Administrators:F NT AUTHORITY\SYSTEM:F WULFTOP\hennie:F BUILTIN\Users:R i myself am logged in as hennie. i tried it with changing BUILTIN\Users:F but it did not help.