“The procedure entry point could not be located.” Fix: You are missing Visual C++ 2005 Redistributables. Install them from Microsoft’s website.
Appendix: file formats, presets, MIDI mappings, checksums and verification, system checklists
Roland has officially discontinued Super Quartet. It has been succeeded by modern engines like the (which features the Zenology and SRX series plugins). You cannot legally purchase a license for Super Quartet from Roland anymore, and official support servers for activation no longer exist.
Sites often host auto-generated "essays" containing software names and version numbers (like "1.52 Download") to trick search engines into indexing their pages for users looking for free software.