latest testing netinstall cd refuses to mount itself on usb cd-drive after start of installation

[Jean-Bernard Addor <jean-bernard.addor@umontreal.ca>]

Hi!

I do not know how to submit this  kind of error.

Install just began and asked for a special file, but my usb cd-driver 
does not need anything with lots of live cd and all other version of 
debian I already installed.

Have a nice day,

Jean-Bernard