Unity 5.3 bundles - "Unable to open archive file"

I get this "Unable to open archive file" error whenever I try to load an asset bundle using AssetBundle.LoadFromFile or AssetBundle.LoadFromFileAsync.

This is happening in the OSX editor.

The error happens with both LZMA and LZ4 compression, and only with the new AssetBundle.LoadFromFile functions. Loading bundles with WWW still works.

 

my game is upgrade unity5.3.0f4
and running in ios load scene and load some abs will cause this error too!!!!

 

i have fix this error, you cant cached a lot assetbundle runtime..
make sure unload your assetbundle after load assets.

 

Having this same issue (5.3.0f4, 5.3.1f1, etc). Android works fine. On iOS (iPadMini, iPad2, etc linked to XCode), downloading bundles fine for the first few then run into this crash/exception:

Unable to open archive file for writing: '/var/mobile/Containers/Data/Application/2144CC8A-6BDD-4CF8-801C-658688275CCE/Library/UnityCache/Temp/347cd6c4f87084f18afe6f8b04f40bd1/__data'

After this error, receive another within XCode:

Failed to decompress data for the AssetBundle 'file:///ASSETPATH.unity3d'.

This is only happening when trying to access the asset for the first time. After the asset is cached (have to restart the app after the error), we're able to get past. However... with more bundles, this happens again and again until each asset is cached appropriately.

This may or may not be related to the amount of bundles loading/unloading as we haven't had this issue with prior full releases of Unity.

*EDIT*
This is due to LoadFromCacheOrDownload.
(http://docs.unity3d.com/ScriptReference/WWW.LoadFromCacheOrDownload.html)

Anyone know of a solution? @Unity?

 

Just throwing my hat in the ring that we are also seeing this in a published WebGL build (not editor). We are using LoadFromCacheOrDownload.

 

I just ran into this but not using LoadFromCacheOrDownload. I'm using AssetBundle.LoadFromFileAsync. AssetBundle.LoadFromFile works fine. I'm thinking its to do with my compression setting. I'll try LZ4 format later.

 

Same problem here.

Unity5.3.1p4

In UnityEditor try load assetbundle use AssetBundle.LoadFromFileAsync and AssetBundle.LoadFromFile will get error:
"Unable to open archive file"

all assetbundle are rebuild in Unity5.3.1p4 and tried with different setting (compressed,chunk-compressed,uncompressed)


but everything works fine with WWW !!!



please help dear Unity!

 

Try removing the "file://" from the path. This fixed the issue for me in 5.3.1p4.

 

thank you koyoki! i will give it a try!

yes..loadfromfile, not like www, should remove "file://"


>_< me stupid

 

hank you koyoki! i will give it a try!

yes..loadfromfile, not like www, should remove "file://"


???????????????????


remove file:// can work file ?

 

Was this issue every resolved. I'm still seeing this on iOS on Unity 5.3.4p1.

 

I'm getting this error in 5.3.3 editor on OSX.

Actually ignore that. My folder was named Streaming Assets and should have been StreamingAssets.

 

It works for me on OSX. Have you tried running the same code on an iOS device?

 

As I said, ignore it. It was my mistake.

 

Hi Andymads, can you confirm whether you got this working on an iOS device or only in the OSX Editor? Thx!

 

@ratmat2002 Got it working on both OSX editor and iOS device. Unity 5.3.3.

My only mistake was an incorrectly named folder.

 

Would you mind posting the piece of code you are using to load the AssetBundles from the StreamingAssets folder? I'm still getting the "Unable to open archive file" error.

 

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using System.Collections;
4. using System.Collections.Generic;
5.  
6. public class LoadFromFileAsync : MonoBehaviour
7. {
8.     public RawImage rawImage;
9.  
10.     void Awake()
11.     {
12.     }
13.  
14.     IEnumerator Start()
15.     {
16.         Debug.Log(Application.streamingAssetsPath);
17.  
18.         var bundleLoadRequest = AssetBundle.LoadFromFileAsync(Application.streamingAssetsPath+"/001");
19.  
20.         yield return bundleLoadRequest;
21.  
22.         if(bundleLoadRequest.assetBundle==null)
23.         {
24.             Debug.LogError("Failed to load bundle");
25.         }
26.         else
27.         {
28.             var assetNames = bundleLoadRequest.assetBundle.GetAllAssetNames();
29.             foreach(var name in assetNames) Debug.Log(name);
30.  
31.             var assetLoadRequest = bundleLoadRequest.assetBundle.LoadAssetAsync<Texture2D>("4334013");
32.  
33.             yield return assetLoadRequest;
34.  
35.             if(assetLoadRequest.asset==null)
36.             {
37.                 Debug.LogError("Failed to load asset");
38.             }
39.             else
40.             {
41.                 Debug.Log(assetLoadRequest.asset.name);
42.  
43.                 rawImage.texture = assetLoadRequest.asset as Texture2D;
44.             }
45.  
46.             bundleLoadRequest.assetBundle.Unload(false);
47.         }
48.     }
49. }
50.  

And obviously make sure you have a root folder named StreamingAssets in your project.

 

Andymads, thank you for the code snippet.

I finally figured it out. The path when loading from files are CASE-SENSITIVE. Arg!

Just a couple of notes on your example code:

1) It appears that you are not including the '.unity3d' file extension when using LoadFromFileAsync. I think this is necessary for proper loading.

2) I am using BuildAssetBundleOptions.ChunkBasedCompression which now appears to load properly.

Andy

 

Just a reminder, we don't have an official file extension ".unity3d" for asset bundle, it's not mandatory. You can use whatever file extension as you want, or without file extension.

But usually people use ".unity3d" as the file extension just because we used it in the official sample code at first time...

 

I'm using BuildPipeline.BuildAssetBundles and the created files do not have an extension. No problem loading them for me.

 

@Vincent Zhang This should probably be mentioned in the docs. As the example there uses:

Code (CSharp):

1. Path.Combine(Application.streamingAssetsPath, "myassetBundle")

which I fails as Application.streamingAssetsPath includes "jar:file:///" on Android.

 

Watch your assetbundle file suffix!

 

I have same error too!show the info"Too many open file" meanwhile

 

Just wanted to add, I was running into this today with AssetBundle.LoadFromFile and AssetBundle.LoadFromFileAsync

I had the asset bundle folder on a different drive (D: drive) from my project. Moving it to the same drive seems to have cleared up the issue.

 

I have the same problem. when I build game in WEBGL. How can WEBGL load local AssetBundle

 

having problems with downloading from server assets bundles i used webrequest and www and both send me failed to recieve data . any one knows a solution? its suddenly happens sometimes on 34% on 80% or 22% or 15% and just restart and restart and never getting the files.... all was working cool like 2 days ago but now the maps dont want to finish the download and im F***ed up coz this is a business proyect that i get paid for

 

I had this same issue. I fixed it with the way I was accessing the directory where the asset bundle was stored. I Used AssetBundle.LoadFile(@"C:\mydirectory\myassetbundle") rather than AssetBundle.LoadFile("C:\mydirectory\myassetbundle"). So I added @ before the directory string. I hope this works for you guys.