OS Name/Version: Ubuntu 26.04
Product Name/Version: AMP v4.1.2
Problem Description: problem whit installation.
[Error/11] Download or unpack failed. Please check your network connection and try again.
[Error/11] Unzip return code was 2
Steps to reproduce:
1 run command sudo su - to get root
2 run command bash <(curl -fsSL getamp.sh) to start AMP installation
3 select your preferences and chose user and password.
4 AMP should install but it doesn’t, i’m not able to open the log file to see wats wrong
Actions taken to resolve so far:
tried reinstalling ubuntu and amp
Usually a sign of a bad IPv6 configuration on the system
I have the same problem. Was originally on a Debian 13 system. Tried everything I could think of, but nothing changed. I just put a new drive in and built it on Ubuntu 26.04 server, and it is still doing the same thing. This is a fresh system with no changes other than trying to install AMP with podman.
My ISP uses CGNAT. I do have a public IPv4 address, and the server lives in the DMZ.
root@everest:~# uname -a
Linux everest 7.0.0-22-generic #22-Ubuntu SMP PREEMPT_DYNAMIC Mon May 25 15:54:34 UTC 2026 x86_64 GNU/Linux
Creating default instance…
[Info/1] AMP Instance Manager v2.7.2.8 built 20/05/2026 06:54
[Info/1] Stream: Mainline / Release - built by CUBECODERS/buildbot on CCL-DEV
[Activity/1] Audit: Unknown/None [CreateInstance] Creating instance ADS01 using ADS module on port 8080.
[Error/9] TaskCanceledException
[Error/9] [0] (TaskCanceledException) : The request was canceled due to the configured HttpClient.Timeout of 30 seconds elapsing.
[Error/9] at Net.Http.HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
at Net.Http.HttpClient.GetStringAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
at ModuleShared.VersionManifest.FetchAsync(String forPlatform)
[Error/9] TimeoutException
[Error/9] [1] (TimeoutException) : A task was canceled.
[Error/9] TaskCanceledException
[Error/9] [2] (TaskCanceledException) : A task was canceled.
[Error/9] at Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at Net.Http.HttpClient.GetStringAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
[Error/7] TaskCanceledException
[Error/7] [0] (TaskCanceledException) : The request was canceled due to the configured HttpClient.Timeout of 30 seconds elapsing.
[Error/7] at Net.Http.HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
at Net.Http.HttpClient.GetStringAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
at ModuleShared.VersionManifest.FetchAsync(String forPlatform)
[Error/7] TimeoutException
[Error/7] [1] (TimeoutException) : A task was canceled.
[Error/7] TaskCanceledException
[Error/7] [2] (TaskCanceledException) : A task was canceled.
[Error/7] at Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at Net.Http.HttpClient.GetStringAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
[Info/7] Instance creation failed. Reason: “The core archive failed to download or unpack: Failed to find a release matching the specified version: Mainline/ - This version may no longer be available to download, you should update to a newer version.”
Failed to create default instance.
Aborting…
This was the case in my instance. It is working after setting static addresses.
