diff --git a/OpenRA.FileFormats/InstallUtils.cs b/OpenRA.FileFormats/InstallUtils.cs
index f699778ed8..41b6fe926c 100644
--- a/OpenRA.FileFormats/InstallUtils.cs
+++ b/OpenRA.FileFormats/InstallUtils.cs
@@ -48,8 +48,6 @@ namespace OpenRA.FileFormats
 					destStream.Write(sourceStream.ReadAllBytes());
 				}
 			}
-			
-			onProgress("Extraction complete");
 			return true;
 		}
 		
@@ -67,7 +65,6 @@ namespace OpenRA.FileFormats
 				onProgress("Extracting "+destFile);
 				File.Copy(fromPath,	Path.Combine(destPath, destFile), true);
 			}
-			onProgress("Extraction complete");
 			return true;
 		}
 		
@@ -84,7 +81,6 @@ namespace OpenRA.FileFormats
 			{
 				var z = new ZipInputStream(File.OpenRead(zipFile));
 				z.ExtractZip(dest, extracted, s => onProgress("Extracting "+s));
-				onProgress("Extraction complete");
 			}
 			catch (SharpZipBaseException)
 			{
diff --git a/OpenRA.Mods.Cnc/Widgets/Logic/CncInstallFromCDLogic.cs b/OpenRA.Mods.Cnc/Widgets/Logic/CncInstallFromCDLogic.cs
index 82bf77c908..f58ad22efa 100644
--- a/OpenRA.Mods.Cnc/Widgets/Logic/CncInstallFromCDLogic.cs
+++ b/OpenRA.Mods.Cnc/Widgets/Logic/CncInstallFromCDLogic.cs
@@ -71,23 +71,21 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 			progressBar.SetIndeterminate(false);
 			
 			var installCounter = 0;
-			var onProgress = (Action<string>)(s =>
+			var installTotal = copyFiles.Count() + extractFiles.Count();
+			var onProgress = (Action<string>)(s => Game.RunAfterTick(() => 
 			{
-				progressBar.Percentage = installCounter*100/(copyFiles.Count() + extractFiles.Count());
+				progressBar.Percentage = installCounter*100/installTotal;
 				installCounter++;
 				
 				statusLabel.GetText = () => s;
-			});
+			}));
 			
-			var onError = (Action<string>)(s =>
+			var onError = (Action<string>)(s => Game.RunAfterTick(() => 
 			{
-				Game.RunAfterTick(() => 
-				{
-					statusLabel.GetText = () => "Error: "+s;
-					panel.GetWidget("RETRY_BUTTON").IsVisible = () => true;
-					panel.GetWidget("BACK_BUTTON").IsVisible = () => true;
-				});
-			});
+				statusLabel.GetText = () => "Error: "+s;
+				panel.GetWidget("RETRY_BUTTON").IsVisible = () => true;
+				panel.GetWidget("BACK_BUTTON").IsVisible = () => true;
+			}));
 			
 			string source;
 			try