Typically, Windows checks drivers for compatibility prior to installation, and if there is an issue, it will refuse to install them. When I say 'runs fine', that includes basic communications between the WK-3800 and the PC and the IDES Data Management software. It installed and ran just fine, and is still running just fine today - even though Casio still insists that it is not compatible with Vista-64. Several years later, when they did release the current Win-7/8 64 bit driver for the WK-3XXX models, I tried it on my Vista-64 system. Jirka For what it is worth: Several years ago, when I replaced my failed Vista-32 system with a Vista-64 unit, I lost communications with my WK-3800, because Casio never wrote a Vista-64 driver for the WK-3XXX units. The WK-3800 includes 76 Full-Size keys, 32-note Polyphony, Touch Sensitive, Genernal MIDI, USB Port, Sequencer, 894 Tones, 182 Rhythms, DSP/Reverb/Chorus/EQ Digital Effects, SD slot, Sound,Rhythm and Song expansion by Internet download, Backlit LCD, New Advanced ZPI Chip, Larger Internal memory, CD Rom and AD-12 Power Supply Included, Pitch Bend and Modulation Wheels, Line In/Out, FDD. Home >Downloads >Firmware and Software >MIDI Drivers. Uninstall the previous version of KORG USB-MIDI Driver using 'Program and Features' applet in the. KROSS/KORG USB-MIDI Driver (for Windows 10) Version：1.15 r22e.
