cryemo
diff --git a/‎External/Tools/FDBuild/Building/AS3/AS3ProjectBuilder.cs‎
Lines changed: 28 additions & 7 deletions b/‎External/Tools/FDBuild/Building/AS3/AS3ProjectBuilder.cs‎
Lines changed: 28 additions & 7 deletions
diff --git a/‎FlashDevelop/Bin/Debug/Tools/fdbuild/fdbuild.exe‎
512 Bytes b/‎FlashDevelop/Bin/Debug/Tools/fdbuild/fdbuild.exe‎
512 Bytes
@@ -65,18 +65,19 @@ private void DetectFlexSdk(string flexsdkPath)
 				flexsdkPath = Path.GetDirectoryName(flexsdkPath);
 
             sdkPath = flexsdkPath;
-            mxmlcPath = Path.Combine(Path.Combine(flexsdkPath, "lib"), "mxmlc.jar");
-            fcshPath = Path.Combine(Path.Combine(flexsdkPath, "lib"), "fcsh.jar");
-            asc2Path = Path.Combine(Path.Combine(flexsdkPath, "lib"), "mxmlc-cli.jar");
+            string libPath = Path.Combine(flexsdkPath, "lib");
+            mxmlcPath = Path.Combine(libPath, "mxmlc.jar");
+            fcshPath = Path.Combine(libPath, "fcsh.jar");
+            asc2Path = Path.Combine(libPath, "mxmlc-cli.jar");
             if (!File.Exists(asc2Path)) ascshPath = null;
             else
             {
-                ascshPath = Path.Combine(Path.Combine(flexsdkPath, "lib"), "ascsh.jar");
-                if (!File.Exists(ascshPath) && !File.Exists(ascshPath + ".disabled"))
+                ascshPath = Path.Combine(libPath, "ascsh.jar");
+                string toolsDir = Path.GetDirectoryName(FDBuildDirectory);
+                string lib = Path.Combine(toolsDir, "flexlibs/lib/ascsh.jar");
+                if (ShouldCopyASCSH(lib, ascshPath))
                 {
                     // try copying the missing JAR in the SDK
-                    string toolsDir = Path.GetDirectoryName(FDBuildDirectory);
-                    string lib = Path.Combine(toolsDir, "flexlibs/lib/ascsh.jar");
                     try
                     {
                         File.Copy(lib, ascshPath);
@@ -94,6 +95,26 @@ private void DetectFlexSdk(string flexsdkPath)
                 VMARGS = jvmConfig["java.args"];
         }
 
+        private bool ShouldCopyASCSH(string lib, string ascsh)
+        {
+            if (File.Exists(ascsh + ".disabled")) return false;
+            if (!File.Exists(ascsh)) return true;
+            // should the JAR be upgraded?
+            FileInfo infoFrom = new FileInfo(lib);
+            FileInfo infoTo = new FileInfo(ascsh);
+            if (infoFrom.LastWriteTime > infoTo.LastWriteTime)
+            {
+                try
+                {
+                    Console.WriteLine("Found 'ascsh.jar' but it looks obsolete.");
+                    File.Delete(ascsh);
+                    return true;
+                }
+                catch { }
+            }
+            return false;
+        }
+
         private string ResolveFlexSdk(string flexsdkPath)
         {
             if (flexsdkPath != null)