> 16:41:41	Info: 	engine: warning: serialize error for
> www.ovh.com/images/telecom/com/com5.jpg to C:/My Web
> Sites/(...)/www.ovh.com/images/telecom/com/com5.jpg.
> tmp: open error: No such file or directory
> (directory exists, file does not exist) 

So does C:/My Web Sites/(...)/www.ovh.com actually exist and you have
permission to write to it?