diff --git a/OpenRA.Launcher.Mac/Controller.m b/OpenRA.Launcher.Mac/Controller.m
index 791db648eb..b368c5cb6d 100644
--- a/OpenRA.Launcher.Mac/Controller.m
+++ b/OpenRA.Launcher.Mac/Controller.m
@@ -65,7 +65,7 @@ extern char **environ;
 - (void)installRAPackages:(NSArray *)args
 {
 	// Todo: check if we can write to the requested dir, escalate priviledges if required.
-	NSArray *a = [NSArray arrayWithObjects:@"--install-ra-packages-inner", [args objectAtIndex:2], nil];
+	NSArray *a = [NSArray arrayWithObjects:@"--install-ra-packages-inner", [args objectAtIndex:2], [args objectAtIndex:3], nil];
 	[self runUtilityWithArgs:a];
 }
 
diff --git a/OpenRA.Launcher.Mac/build/Release/OpenRA.app/Contents/MacOS/OpenRA b/OpenRA.Launcher.Mac/build/Release/OpenRA.app/Contents/MacOS/OpenRA
index 6dd080c849..769bc2a49b 100755
Binary files a/OpenRA.Launcher.Mac/build/Release/OpenRA.app/Contents/MacOS/OpenRA and b/OpenRA.Launcher.Mac/build/Release/OpenRA.app/Contents/MacOS/OpenRA differ
diff --git a/OpenRA.Utility/Command.cs b/OpenRA.Utility/Command.cs
index 5386e9f959..f13e3dcd19 100644
--- a/OpenRA.Utility/Command.cs
+++ b/OpenRA.Utility/Command.cs
@@ -70,7 +70,7 @@ namespace OpenRA.Utility
 				Console.WriteLine("Status: Extracting {0}", file.ToLowerInvariant());
 				File.Copy(
 					Path.Combine(fromPath, file),
-					Path.Combine(toPath, file.ToLowerInvariant()), true);
+					Path.Combine(toPath, Path.GetFileName(file).ToLowerInvariant()), true);
 			}
 
 			Console.WriteLine("Status: Completed");