It looks like you're trying to craft a forum post (e.g., Gearspace, KVR, or Craigslist) for a legacy McDSP software bundle: Complete, for RTAS/TDM/AU on OS X Intel, including the Xvx (harmonic exciter) algorithm.
Compatibility: Optimized for Intel-based Macs running Mac OS X 10.4.11 or higher.
This was Digidesign’s native plugin format for Pro Tools LE (Digi 001/002) and M-Powered. RTAS ran on the host computer’s CPU. It introduced latency but was accessible. If you had a PowerBook G4 and an Mbox, you used RTAS.
Classic Pack: Focused on fundamental dynamics, offering classic filtering, distortion, and de-essing .
: This specific version is highly outdated and will not run on modern macOS versions (like Monterey or Sonoma) or Apple Silicon (M1/M2/M3). Current Alternatives : For modern systems, McDSP now offers the Everything Pack
If you are trying to get these plugins running on a modern system, let me know: