Xcache is not setup properly - xcache cannot be reset when upgrading modules and skins.
Make sure and either disable Xcache authentication, or properly set a user name and password - see:
Xcache Administration
Contact your hosting provider for assistance if needed.
... what did that mean? Did we something wrong in a modul?
thx, Stefan
updated by @bandwerkstatt: 12/02/14 06:04:37AM