>Does it work when commenting out the call to set the alternate setting?
Yes :-) [The code after '/* Set alternative setting */'] BTW: In sanei_usb_close() there are now two usb_clear_halt(). I don't think they're needed. I get an error every time sanei_usb_close() is called: [sanei_usb] sanei_usb_close: closing device 0 USB error: error clearing pipe stall usb_os_close: 04a9:220e IMVHO pipes should only be reset if they're actually stalled. Regards Beat H.
