Reply to VCI 100 SE arcade Fw4, everything appear ok but doesn't work

I was djing very well a few days ago, but last friday when I went to work the VCI failed. Or also it could be a Traktor or Windows bug, i don't know.
The case is that everything appeared OK in the screen. Traktor and Windows recognice the device as allways, but when I try to do anything the VCI data led flashed as always but Traktor answered with nothing... It seems like the midi signal get lost in some point between the port and the software.

I've been trying any procedure at my hand, from changing cables (DJ TT cables, of course they are perfect, so this is not the quid) to uninstall and re-install all files around, including Traktor.

Any idea?

a trasatlantic grateful hug in advance