❌ “Error: Invalid File” (aka ESR Error)

A required file for Virtual Mix Rack is missing or damaged.
This is the “ESR Error” — and it usually appears when there are conflicting versions of a plugin installed on your system.

---

🎯 What Causes the ESR Error?

On Windows, this typically happens when:

• Multiple versions of a plugin are installed in different directories.
• Your DAW scans both locations, becomes unsure which version to load, and throws an error.

Example:

• VerbSuite Classics v1.0.8.3 at:

• VerbSuite Classics v1.0.11.1 at:

⚠️ Both folders are scanned by your DAW → ESR Error

---

🧹 How to Fix It

1️⃣ Check and Clean Plugin Paths

1. Open your DAW’s Plug-in Manager.
2. Review all plugin directories listed.
3. Navigate to each one in File Explorer and delete any version of the plugin causing issues.

Common plugin paths to check:

2️⃣ Uninstall Using Add or Remove Programs (or Slate Digital Connect)

1. Go to Control Panel > Add or Remove Programs.
2. Uninstall the affected plugin (e.g., Virtual Mix Rack).

3️⃣ Double-Check Other Plugin Types

Ensure nothing is left behind in these folders:

VST (32-bit):

VST (64-bit):

VST3 (32-bit):

VST3 (64-bit):

AAX (64-bit):

AAX (32-bit):

4️⃣ Reinstall Latest Plugin Versions

After cleanup:

• Reboot your system (optional but recommended).
• Download and install the latest plugin versions from:
  https://app.completeaccess.audio/installers

5️⃣ Update iLok License Manager

• Windows: Download for Windows
• Mac: Download for Mac

---

🛡️ Preventing Future ESR Errors

• Use a single plugin install folder (per plugin format) where possible.
• Pay close attention to install paths during plugin installation.
• Regularly review and clean plugin directories listed in your DAW.

For Mac-specific troubleshooting, see:
ESR Error – Mac

---

Still need help?
Submit a support ticket — we’re here to help!