So you sit it out and wait for 128b? (but in general I agree, sideways is just movement ...) He has libusb installed but only 64bit version (multi-arch: same). And apt-get claimed there is already newest version. So my guess was there is no chance for a library to exist in 32bit AND 64bit on a system? If so simplest solution would be to take vmware or virtualbox and install a 32bit system.