Bug 43373 - [iOS]Unable to upload application to device due to an error "Could not load the framework 'libswiftos.dylib' (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib)" with Xcode8-beta6 update
Summary: [iOS]Unable to upload application to device due to an error "Could not load...
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 9.99 (iOS 10 previews)
Hardware: PC Mac OS
: High blocker
Target Milestone: Xcode8 (iOS10)
Assignee: Bugzilla
: 43403 ()
Depends on:
Reported: 2016-08-15 21:24 UTC by GouriKumari
Modified: 2016-10-27 22:08 UTC (History)
7 users (show)

Is this bug a regression?: ---
Last known good build:

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Description GouriKumari 2016-08-15 21:24:07 UTC
## Steps to reproduce:

Update Xcode8 to Xcode8-beta6 and devices to iOS8-beta6.
Update System to builds from alpha channel.
Build and deploy an iOS app on device.

## Actual Behaviour:
App fails to upload with an error: 
"/Applications/Xamarin Studio.app/Contents/Resources/lib/monodevelop/AddIns/MonoDevelop.IPhone/mlaunch.app/Contents/MacOS/mlaunch -sdkroot "/Applications/Xcode8-beta6.app/Contents/Developer" -installdev "/Users/gouri/Projects/TestiOSXcode86/bin/iPhone/Debug/build-iphone6.1-10.0/TestiOSXcode86.app" "--devname=XQAiPhone5Sd"
error HE0004: Could not load the framework 'libswiftos.dylib' (path: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib): dlopen(/Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib, 1): Library not loaded: @rpath/libswiftXPC.dylib
  Referenced from: /Applications/Xcode8-beta6.app/Contents/Frameworks/libswiftos.dylib
  Reason: image not found

Application could not be uploaded to the device."

Build Log: https://gist.github.com/GouriKumari/67ee8c70d3950a00c1ccf2d23135fbf2
Error Log: https://gist.github.com/GouriKumari/6dc89ba9060d6d80b4472173d177c559

## Test Env:
=== Xamarin Studio Enterprise ===

Version 6.1 (build 5338)
Installation UUID: fafd3486-1aec-4f9c-ab77-08bf4a000708
	Mono 4.6.0 (mono-4.6.0-branch/e571108) (64-bit)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 406000138

=== NuGet ===


=== Xamarin.Profiler ===

Version: 0.29.99
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

=== Apple Developer Tools ===

Xcode 8.0 (11239.2)
Build 8S201h

=== Xamarin.iOS ===

Version: (Visual Studio Enterprise)
Hash: 40db5d1
Branch: cycle8
Build date: 2016-08-11 18:59:56-0400

=== Xamarin.Android ===

Version: (Visual Studio Enterprise)
Android SDK: /Users/gouri/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		4.0.3 (API level 15)
		4.4   (API level 19)
		5.0   (API level 21)
		6.0   (API level 23)

SDK Tools Version: 24.4.1
SDK Platform Tools Version: 23.0.1
SDK Build Tools Version: 23.0.1

Java SDK: /usr
java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)

Android Designer EPL code available here:

=== Xamarin Android Player ===

Not Installed

=== Xamarin.Mac ===

Version: (Visual Studio Enterprise)

=== Build Information ===

Release ID: 601005338
Git revision: 860f5d2e358077f913badaf7b14c5532888bf12c
Build date: 2016-08-11 16:20:43-04
Xamarin addins: 8bea879bcb4de08213fff5812fd54323d79889d6
Build lane: monodevelop-lion-cycle8

=== Operating System ===

Mac OS X 10.11.5

iPhone6S beta5 
iPad4 beta6
Comment 1 GouriKumari 2016-08-15 21:42:25 UTC
## Update to STEPS
>>Update Xcode8 to Xcode8-beta6 and devices to iOS8-beta6.
  iOS8-beta6 should be iOS10-beta6 and any devices with stable or older iOS versions.
Comment 2 Sebastien Pouliot 2016-08-16 02:06:59 UTC
Fixed in xamarin-macios/xcode8 9fe13aaa580e76997778c0ca7945718dba4dd323

This solves both the simulator and device support issue.

It's possible to download a newer `mlaunch` from [1] and replace it inside XS to get device support working, e.g.

> cp mlaunch "/Applications/Xamarin Studio.app/Contents/Resources/lib/monodevelop/AddIns/MonoDevelop.IPhone/mlaunch.app/Contents/MacOS"

[1] http://bosstoragemirror.blob.core.windows.net/public-builder/mlaunch-ade5bd316053a4f747df13fd1e0386544ad223c
Comment 3 Vincent Dondain [MSFT] 2016-08-16 09:01:14 UTC
@sebastien looks like you pasted the old mlaunch address (link is broken). Here's the new one: http://bosstoragemirror.blob.core.windows.net/public-builder/mlaunch-307d345a06bd3f13994877ee5a4f316f5e6a7940
Comment 4 Sebastien Pouliot 2016-08-16 11:55:47 UTC
@Vincent, yes I pasted the wrong/old link. That's for updating :)
Comment 5 Sebastien Pouliot 2016-08-16 14:49:37 UTC
*** Bug 43403 has been marked as a duplicate of this bug. ***
Comment 6 Mohit Kheterpal 2016-08-17 16:56:17 UTC
Today, I have checked this issue with XamarinStudio- fc3ab7c0cc891ef8c9867558d026257fc4654758 and /xamarin.ios- 9eca87665af46375758b14e3b2622122b9cb6032 with Xcode 8 Beta 6 and observed that this issue is fixed, now we are able to build and deploy application on device and simulator successfully.

Hence closing this issue.

Comment 7 Mike Berlin 2016-10-27 22:08:14 UTC
With Xcode 8.1 release this is also happening. I get the following error when trying to deploy to device or run the simulator (I have tried Stable, Beta, and Alpha channels all with the same error):

/Applications/Xamarin Studio.app/Contents/Resources/lib/monodevelop/AddIns/MonoDevelop.IPhone/mlaunch.app/Contents/MacOS/mlaunch -sdkroot "/Applications/Xcode.app/Contents/Developer" -installdev "<path to my bin directory for the project>" --device ios "--devname=iPad"

error HE0003: Could not load the framework 'libswiftos.dylib' (path: /Applications/Xcode.app/Contents/Frameworks/libswiftos.dylib): not found.

Application could not be uploaded to the device.


Let me know if I can provide any further info.