diff --git a/BinaryObjectScanner/Protection/Macrovision.CDilla.cs b/BinaryObjectScanner/Protection/Macrovision.CDilla.cs
index 9f33682b..79251c21 100644
--- a/BinaryObjectScanner/Protection/Macrovision.CDilla.cs
+++ b/BinaryObjectScanner/Protection/Macrovision.CDilla.cs
@@ -156,7 +156,11 @@ namespace BinaryObjectScanner.Protection
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckDirectoryPath(string, IEnumerable{string})"/>
+#if NET48
         internal ConcurrentQueue<string> CDillaCheckDirectoryPath(string path, IEnumerable<string> files)
+#else
+        internal ConcurrentQueue<string> CDillaCheckDirectoryPath(string path, IEnumerable<string>? files)
+#endif
         {
             var matchers = new List<PathMatchSet>
             {
@@ -195,7 +199,7 @@ namespace BinaryObjectScanner.Protection
                 new PathMatchSet(new PathMatch("CDILLA16.EXE", useEndsWith: true), "C-Dilla License Management System"),
             };
 
-            return MatchUtil.GetAllMatches(files ?? System.Array.Empty<string>(), matchers, any: false);
+            return MatchUtil.GetAllMatches(files ?? Array.Empty<string>(), matchers, any: false);
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckFilePath(string)"/>
diff --git a/BinaryObjectScanner/Protection/Macrovision.CactusDataShield.cs b/BinaryObjectScanner/Protection/Macrovision.CactusDataShield.cs
index d7b8277e..a6a8e03d 100644
--- a/BinaryObjectScanner/Protection/Macrovision.CactusDataShield.cs
+++ b/BinaryObjectScanner/Protection/Macrovision.CactusDataShield.cs
@@ -131,12 +131,12 @@ namespace BinaryObjectScanner.Protection
 #if NET48
         public static string GetCactusDataShieldVersion(string firstMatchedString, IEnumerable<string> files)
 #else
-        public static string? GetCactusDataShieldVersion(string firstMatchedString, IEnumerable<string>? files)
+        public static string GetCactusDataShieldVersion(string firstMatchedString, IEnumerable<string>? files)
 #endif
         {
             // If we have no files
             if (files == null)
-                return null;
+                return string.Empty;
 
             // Find the version.txt file first
             var versionPath = files.FirstOrDefault(f => Path.GetFileName(f).Equals("version.txt", StringComparison.OrdinalIgnoreCase));
diff --git a/BinaryObjectScanner/Protection/Macrovision.RipGuard.cs b/BinaryObjectScanner/Protection/Macrovision.RipGuard.cs
index 6c41b07e..40184350 100644
--- a/BinaryObjectScanner/Protection/Macrovision.RipGuard.cs
+++ b/BinaryObjectScanner/Protection/Macrovision.RipGuard.cs
@@ -63,26 +63,10 @@ namespace BinaryObjectScanner.Protection
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckDirectoryPath(string, IEnumerable{string})"/>
-        internal ConcurrentQueue<string> RipGuardCheckDirectoryPath(string path, IEnumerable<string> files)
-        {
-            var matchers = new List<PathMatchSet>
-            {
-                // Found in the Black Lagoon Season 1 DVD steelbook box set (Geneon ID 12970).
-                new PathMatchSet(new PathMatch("G23YHWO1.EXE", useEndsWith: true), "RipGuard"),
-                new PathMatchSet(new PathMatch("RGASDEV.SYS", useEndsWith: true), "RipGuard"),
-
-                // Mentioned online in https://forum.redfox.bz/threads/resolved-one-on-one-with-tony-horton-vol2-disc3.33901/.
-                new PathMatchSet(new PathMatch("9KMJ9G4I.EXE", useEndsWith: true), "RipGuard (Unconfirmed - Please report to us on GitHub)"),
-            };
-
-            return MatchUtil.GetAllMatches(files ?? System.Array.Empty<string>(), matchers, any: false);
-        }
-
-        /// <inheritdoc cref="Interfaces.IPathCheck.CheckFilePath(string)"/>
 #if NET48
-        internal string RipGuardCheckFilePath(string path)
+        internal ConcurrentQueue<string> RipGuardCheckDirectoryPath(string path, IEnumerable<string> files)
 #else
-        internal string? RipGuardCheckFilePath(string path)
+        internal ConcurrentQueue<string> RipGuardCheckDirectoryPath(string path, IEnumerable<string>? files)
 #endif
         {
             var matchers = new List<PathMatchSet>
@@ -95,7 +79,27 @@ namespace BinaryObjectScanner.Protection
                 new PathMatchSet(new PathMatch("9KMJ9G4I.EXE", useEndsWith: true), "RipGuard (Unconfirmed - Please report to us on GitHub)"),
             };
 
-            return MatchUtil.GetFirstMatch(path, matchers, any: true);
+            return MatchUtil.GetAllMatches(files ?? Array.Empty<string>(), matchers, any: false);
         }
+
+    /// <inheritdoc cref="Interfaces.IPathCheck.CheckFilePath(string)"/>
+#if NET48
+        internal string RipGuardCheckFilePath(string path)
+#else
+    internal string? RipGuardCheckFilePath(string path)
+#endif
+    {
+        var matchers = new List<PathMatchSet>
+            {
+                // Found in the Black Lagoon Season 1 DVD steelbook box set (Geneon ID 12970).
+                new PathMatchSet(new PathMatch("G23YHWO1.EXE", useEndsWith: true), "RipGuard"),
+                new PathMatchSet(new PathMatch("RGASDEV.SYS", useEndsWith: true), "RipGuard"),
+
+                // Mentioned online in https://forum.redfox.bz/threads/resolved-one-on-one-with-tony-horton-vol2-disc3.33901/.
+                new PathMatchSet(new PathMatch("9KMJ9G4I.EXE", useEndsWith: true), "RipGuard (Unconfirmed - Please report to us on GitHub)"),
+            };
+
+        return MatchUtil.GetFirstMatch(path, matchers, any: true);
     }
 }
+}
diff --git a/BinaryObjectScanner/Protection/Macrovision.SafeCast.cs b/BinaryObjectScanner/Protection/Macrovision.SafeCast.cs
index 67e4d0c7..c57b62f6 100644
--- a/BinaryObjectScanner/Protection/Macrovision.SafeCast.cs
+++ b/BinaryObjectScanner/Protection/Macrovision.SafeCast.cs
@@ -152,7 +152,11 @@ namespace BinaryObjectScanner.Protection
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckDirectoryPath(string, IEnumerable{string})"/>
+#if NET48
         internal ConcurrentQueue<string> SafeCastCheckDirectoryPath(string path, IEnumerable<string> files)
+#else
+        internal ConcurrentQueue<string> SafeCastCheckDirectoryPath(string path, IEnumerable<string>? files)
+#endif
         {
             var matchers = new List<PathMatchSet>
             {
@@ -191,7 +195,7 @@ namespace BinaryObjectScanner.Protection
                 new PathMatchSet(new PathMatch("CDAC13BA.EXE", useEndsWith: true), "SafeCast"),
             };
 
-            return MatchUtil.GetAllMatches(files ?? System.Array.Empty<string>(), matchers, any: false);
+            return MatchUtil.GetAllMatches(files ?? Array.Empty<string>(), matchers, any: false);
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckFilePath(string)"/>
diff --git a/BinaryObjectScanner/Protection/Macrovision.SafeDisc.cs b/BinaryObjectScanner/Protection/Macrovision.SafeDisc.cs
index 91d6ca82..8c4ab0ee 100644
--- a/BinaryObjectScanner/Protection/Macrovision.SafeDisc.cs
+++ b/BinaryObjectScanner/Protection/Macrovision.SafeDisc.cs
@@ -114,7 +114,11 @@ namespace BinaryObjectScanner.Protection
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckDirectoryPath(string, IEnumerable{string})"/>
+#if NET48
         internal ConcurrentQueue<string> SafeDiscCheckDirectoryPath(string path, IEnumerable<string> files)
+#else
+        internal ConcurrentQueue<string> SafeDiscCheckDirectoryPath(string path, IEnumerable<string>? files)
+#endif
         {
             var matchers = new List<PathMatchSet>
             {
@@ -218,7 +222,7 @@ namespace BinaryObjectScanner.Protection
                 new PathMatchSet(".SafeDiscDVD.bundle", "SafeDisc for Macintosh"),
             };
 
-            return MatchUtil.GetAllMatches(files ?? System.Array.Empty<string>(), matchers, any: false);
+            return MatchUtil.GetAllMatches(files ?? Array.Empty<string>(), matchers, any: false);
         }
 
         /// <inheritdoc cref="Interfaces.IPathCheck.CheckFilePath(string)"/>