I can confirm that the issue of the garbage files (originally reported here https://netbeans.org/bugzilla/show_bug.cgi?id=242545#c12 ) is due to the files not being gzip decompressed.

To reproduce:
* start a clean NetBeans dev (in my case: netbeans-trunk-nightly-201411050002.zip)
* create a HTML5/JS Application with all default settings
* right-click the project -> Properties -> JavaScript Files & add the latest version of jqueryui (currently: 1.10.4) -> OK
* NetBeans downloads the files, but there are many files that occur as garbage

Why I'm saying it's due to the files not being gzip decompressed: I wrote a simple Java program, which reads a garbage file & prints it out after gzip decompression. The result is the original expected file.

Of course, the weird thing is that some files are downloaded just fine, while others aren't, even though they all are returned with the HTTP header Content-Encoding: "gzip".


Version info (note: I made sure the User/Cache directories did not exist on startup, so I started from a clean NetBeans):

Product Version: NetBeans IDE Dev (Build 201411050002)
Updates: Updates available
Java: 1.8.0_25; Java HotSpot(TM) 64-Bit Server VM 25.25-b02
Runtime: Java(TM) SE Runtime Environment 1.8.0_25-b18
System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)
User directory: C:\Users\vanelvan\AppData\Roaming\NetBeans\dev
Cache directory: C:\Users\vanelvan\AppData\Local\NetBeans\Cache\dev



Source code of the Java program:

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.nio.CharBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.zip.GZIPInputStream;

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {
        Path p = Paths.get("C:\\Users\\me\\Documents\\NetBeansProjects\\HTML5Application\\public_html\\js\\libs\\jqueryui\\css\\jquery.ui.autocomplete.css");
        CharBuffer buf = CharBuffer.allocate(8 * 1024);
        try (Reader in = new InputStreamReader(new GZIPInputStream(Files.newInputStream(p)))) {
            while (in.read(buf) != -1) {
                System.out.println(buf.flip().toString());
                buf.clear();
            }
        }
    }

}