It must have something to do with the internal VCC keymap.ini, and your Italian keyboard.
I never had any problems with it at the time (2012).
VCC is a very good emulator, but the developers seem to be against command-line features??.
But using the Virtual HD setup and compilation Image is pretty awesome.
you can get most games booting with only a couple of key presses.
It's possible to add all COCO2 to the Dragon GameBase using the same MAME and XROAR scripts.
a simple cut and paste works with all COCO2 disks tested.