diff --git a/launcher-builder/src/main/java/com/skcraft/launcher/builder/ClientFileCollector.java b/launcher-builder/src/main/java/com/skcraft/launcher/builder/ClientFileCollector.java
index 02805a341..1356a6cad 100644
--- a/launcher-builder/src/main/java/com/skcraft/launcher/builder/ClientFileCollector.java
+++ b/launcher-builder/src/main/java/com/skcraft/launcher/builder/ClientFileCollector.java
@@ -11,12 +11,14 @@
 import com.google.common.io.Files;
 import com.skcraft.launcher.model.modpack.FileInstall;
 import com.skcraft.launcher.model.modpack.Manifest;
+import com.skcraft.launcher.util.HttpRequest;
 import lombok.NonNull;
 import lombok.extern.java.Log;
 import org.apache.commons.io.FilenameUtils;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.URL;
 import java.nio.charset.Charset;
 
 /**
@@ -54,24 +56,70 @@ protected DirectoryBehavior getBehavior(@NonNull String name) {
 
     @Override
     protected void onFile(File file, String relPath) throws IOException {
-        if (file.getName().endsWith(FileInfoScanner.FILE_SUFFIX) || file.getName().endsWith(URL_FILE_SUFFIX)) {
+        ClientFileCollector.log.info(String.format("Get %s from %s...", relPath, file.getAbsolutePath()));
+        if (
+                (file.getName().endsWith(FileInfoScanner.FILE_SUFFIX) || file.getName().endsWith(URL_FILE_SUFFIX))
+                && new File(file.getAbsoluteFile().getParentFile(), file.getName().replace(URL_FILE_SUFFIX, "")).exists()
+        ) {
+            ClientFileCollector.log.info(String.format("Get %s ignored ...", relPath));
             return;
         }
 
-        FileInstall entry = new FileInstall();
-        String hash = Files.hash(file, hf).toString();
-        String to = FilenameUtils.separatorsToUnix(FilenameUtils.normalize(relPath));
+        File urlFile;
+        if(file.getName().endsWith(URL_FILE_SUFFIX))
+        {
+            urlFile = file;
+            file    = new File(file.getAbsoluteFile().getParentFile(), file.getName().replace(URL_FILE_SUFFIX, ""));
+            relPath = relPath.replace(URL_FILE_SUFFIX, "");
+        }
+        else
+        {
+            urlFile = new File(file.getAbsoluteFile().getParentFile(), file.getName() + URL_FILE_SUFFIX);
+        }
         
         // url.txt override file
-        File urlFile = new File(file.getAbsoluteFile().getParentFile(), file.getName() + URL_FILE_SUFFIX);
-        String location;
+        String location, hash;
         boolean copy = true;
-        if (urlFile.exists() && !System.getProperty("com.skcraft.builder.ignoreURLOverrides", "false").equalsIgnoreCase("true")) {
+        if (urlFile.exists() &&
+                (
+                        !file.exists() || !System.getProperty("com.skcraft.builder.ignoreURLOverrides", "false")
+                                                 .equalsIgnoreCase("true")
+                )
+        ) {
             location = Files.readFirstLine(urlFile, Charset.defaultCharset());
             copy = false;
+
+            if (file.exists())
+            {
+                hash = Files.hash(file, hf).toString();
+            }
+            else
+            {
+                ClientFileCollector.log.info(String.format("Download %s from %s...", relPath, location));
+                File tempFile = File.createTempFile("com.skcraft.builder", null);
+                URL url = HttpRequest.url(location.trim());
+                try {
+                    HttpRequest.get(url)
+                            .execute()
+                            .expectResponseCode(200)
+                            .saveContent(tempFile);
+                    hash = Files.hash(tempFile, hf).toString();
+                } catch (InterruptedException e) {
+                    ClientFileCollector.log.warning(String.format("Download from %s failed! ", location));
+                    throw new IOException(e);
+                } finally {
+                    if(!tempFile.delete()) {
+                        ClientFileCollector.log.warning(String.format("Unable to delete %s! ", tempFile.getAbsolutePath()));
+                    }
+                }
+            }
         } else {
+            hash = Files.hash(file, hf).toString();
             location = hash.substring(0, 2) + "/" + hash.substring(2, 4) + "/" + hash;
         }
+
+        FileInstall entry = new FileInstall();
+        String to = FilenameUtils.separatorsToUnix(FilenameUtils.normalize(relPath));
         
         File destPath = new File(destDir, location);
         entry.setHash(hash);