The v2 driver with the multi-cut feature for the SONY UP-DR200 can be tricky to find, especially for 64-bit systems. Have you tried checking Sony's official support site or legacy support pages? Sometimes, older drivers are tucked away in their archives.
If that doesn’t work, you might also want to look into forums or third-party driver repositories like DriverGuide, but proceed cautiously to avoid malware.
Hope this helps, and good luck!