I am trying to build a Xamarin.iOS(runtime v4.0.30319) project but keep getting the following error
Severity Code Description Project File Line Suppression State
Error Can not resolve reference: /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/lib/mono/Xamarin.iOS/Facades/System.Threading.Tasks.Extensions.dll myApp.iOS C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets 795
When I look in C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\Xamarin.iOS\v1.0\Facades I can see System.Threading.Tasks.Extensions.dll exists.
and when I compare Xamarin.iOS.Common.targets on another machine that works, there are no differences
after extensive searching I have not been able find a solution. I have also tried:
manually adding the .dll to the iOS project
reinstalling the .netstandard framework which is used
deleting the solution and pulling from source control (I'm the only one affected by this issue)
compared my set up to other working set ups
Extra information (possibly irrelevant): This is a cross platform solution and when built in the android environment, everything works as expected.
This issue was caused by a versioning mismatch.
I was running developing in on my windows machine and deploying to an iOS device via a mac on my local network.
The iOS version held on the mac differed from the version in my xamarin iOS project (the mac had been updated by another dev).
The resolution for me was to make sure both versions were the same
I too had a similar problem but there was no System.Threading.Tasks.Extensions.dll on the Mac in the /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/lib/mono/Xamarin.iOS/Facades folder. However on the Windows PC, this file exists in the C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\Xamarin.iOS\v1.0\Facades folder.
The solution for me was to copy the System.Threading.Tasks.Extensions.dll file from the Windows PC to the Mac.
I ran into this issue as well. My solution was to launch Visual Studio on the Mac (in my case a Mac Mini) and grab all updates for Visual Studio. One of the updates specifically mentioned the System.Threading.Tasks.Extensions.dll issue that I had been experiencing. After the updates I was able to build the project.
Release note of Visual Studio 15.9.4 :
"Error MT2002: Failed to resolve 'System.Runtime.CompilerServices.AsyncValueTaskMethodBuilder' reference from 'System.Threading.Tasks.Extensions...'" when building a Xamarin.iOS project."
https://learn.microsoft.com/fr-fr/visualstudio/releasenotes/vs2017-relnotes#-visual-studio-2017-version-1594visual-studio-2017-version-1594-
Related
I am trying to run C++ code for Azure Kinect Body Tracking samples on Windows available from Microsoft on Git. I have latest NVIDIA drivers installed on my system. While trying to build the project in Visual Studio, NuGet restore for Microsoft.Azure.Kinect.BodyTracking.Dependencies.cuDNN fails for me with a message "could not find a part of path build/native/Microsoft.Azure.Kinect.BodyTracking.Dependencies.cuDNN.targets".
On the other hand, the body tracking viewer app works fine for me.
I was able to solve this by reinstalling the Visual Studio. Not sure what was failing but it got resolved after fresh install.
I'm trying to run an SSIS package in Visual Studio 2012. When I click the "Start" button I get this very odd error in a popup from Visual Studio:
Method not found: 'Boolean
Microsoft.SqlServer.Dts.Design.VisualStudio2012Utils.IsVisualStudio2012ProInstalled()'.
(Microsoft.DataTransformationServices.VsIntegration)
Clicking on the show technical information, I get this stack trace:
===================================
Failed to start project (Microsoft Visual Studio)
===================================
Method not found: 'Boolean Microsoft.SqlServer.Dts.Design.VisualStudio2012Utils.IsVisualStudio2012ProInstalled()'. (Microsoft.DataTransformationServices.VsIntegration)
------------------------------
Program Location:
at Microsoft.DataTransformationServices.Project.DataTransformationsPackageDebugger.LaunchVsDebugger(IVsDebugger iVsDebugger, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsPackageDebugger.ValidateAndRunDebugger(Int32 flags, IOutputWindow outputWindow, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchDtsPackage(Int32 launchOptions, ProjectItem startupProjItem, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchActivePackage(Int32 launchOptions)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.LaunchDtsPackage(Int32 launchOptions, DataTransformationsProjectConfigurationOptions options)
at Microsoft.DataTransformationServices.Project.DataTransformationsProjectDebugger.Launch(Int32 launchOptions, DataTransformationsProjectConfigurationOptions options)
Has anyone ever seen this error before or know what the issue might be? A bit of googling turned up absolutely nothing for me.
I was able to happily develop and run SSIS packages from Visual Studio 2012 without any issues just a couple days ago (I did reboot my PC over the weekend and some windows updates were installed)
ETA:
I was able to find a couple very recent technet posts about this here and here so I suspect this was something that broke in an update over the weekend. One post says he solved the issue by reinstalling, but of course I'd rather not go that route if I don't have to.
Open the Developer Command Prompt for VS212 as Administrator
execute the command cd "C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\PrivateAssemblies"
execute the command gacutil /if Microsoft.SqlServer.Dts.Design.dll
restart Visual Studio
Source msdn Fail to start project
For visual Studio 2013 execute the command cd "C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\PrivateAssemblies" in point 2 and then execute point 3 and 4.
The following is the command we have to use to resolve the issue:
"C:\Program Files\Microsoft SDKs\Windows\v8.0A\bin\NETFX 4.0 Tools\gacutil.exe" /if "C:\Program Files\Microsoft Visual Studio 11.0\Common7\IDE\PrivateAssemblies\Microsoft.SqlServer.Dts.Design.dll"
Make sure that your dll file and Gacutil.exe file locations are correct. It may be different in other systems.
Note: You should open your “Command Prompt” as an administrator to run the above command.
I experienced the same problem.
Downloaded and installed SQL Server 2012 SP2 and that seemed to have fixed the problem.
Hope this helps!!
This is probably happening because you have Visual Studio 2013 and the BI tools for it installed also. If you use Visual Studio 2013 for the same package it will probably work. The other answer suggesting the run of gacutil to register the old version may have negative impacts later when you want to use the Visual Studio 2013 tools for SSIS.
I had the exact same thing just happen and miraculously now my machine has been "fixed".
(I actually had it happen on both a Win 8.1 machine and a new Win 7 machine.)
My colleague and I noticed that the SSIS toolbox was missing from my IDE. After opening an SSIS package, going to the SSIS menu, and adding back in my "SSIS Toolbox", for some strange reason, my packages now run fine.
I'm guessing a recent update reset the behavior of the IDE.?.?
If this black magic worked for me, I'm hoping it will work for others.
EDIT:
I had the behavior revert itself.
I uninstalled SQL Server 2012 SP2 HF 5522, then rebooted
I then uninstalled SQL Server 2012 SP2, then rebooted
After that, my IDE still gave the error.
I then tried to apply SQL Server SP1 CU 9, but my environment said it wasn't needed.
I then rebooted one last time.
My SSIS Packages run again.
Voodoo...
If you're running across this issue somewhat after the fact (as I did), it appears that it has been fixed in a later release of the SSDT-BI tools installer. Either that, or the process of re-installing fixed it for me.
The file name of the installer on the download page has not changed, but there was a new version released in March of 2015. The new version number is 11.0.5583.0, and the previous version that was causing this error was 11.0.3436.0.
So a simple update might be sufficient. It worked for me with no changes to the GAC.
I have visual studio express 2012
and it was working fine earlier I had run my solution once. But now when I do it, there appears a dialog box with the message!
the Microsoft.VisualStudio.Web.PasteJson.JsonPackage, Microsoft.VisualStudio.Web.PasteJson package did not load correctly.
the problem may have been caused by a configuration changhe or by installation of another extension. You can get more information by exmamining the file
C:\Users\AppData\Roaming\Microsoft\VWDExpress\11.0\Log.xml
continue to show this error message?
How do I get rid of this error?
I started to see this on the fresh windows & VS 2013 Ultimate with Update 2 installation.
To resolve the problem, close all Visual Studio instances head over to
C:\Users\<your users name>\AppData\Local\Microsoft\VisualStudio\12.0\ComponentModelCache
and delete all the files in the folder.
It worked fine for me. Thanks to this article.
Not relevant to VS 2012 express, but I experienced this problem with VS 2013 Premium. I had recently added the productivity power tools extension. To get back up and running, I loaded Visual Studio in safe mode:
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE>devenv /safemode
And un-installed the productivity tools. The errors went away.
You need to clear the ComponentModelCache folder or rename it. For Visual Studio 2013, it’s located in the %LOCALAPPDATA%\Microsoft\VisualStudio\12.0 folder.
Refrence:
http://www.rajapet.com/2014/02/when-the-editorpackage-does-not-load-correctly.html
I had Visual Studio 2013 Professional and I got the same error. I couldn't remove it until I repaired VS installation. It took a while but now it works fine.
I had this problem as I had an older version of VS2012 Express (release on Web Platform installer dated 15/08/2012).
Try installing 'Visual Studio 2012 Express for Web (Latest)' with release date 22/10/2012 from the Microsoft Web Platform Installer.
That is all I did and I no longer get those messages.
I'am developing a android application in Visual Studio and the Xamarin c# monodroid development tools.
I have some external JAR files that i embed into my projects. Most of the project work fine but when i try to embed the JAR from Yocto (yocto android lib) and place the YoctoAPI.jar into a new android project and link it as "EmbeddedJar" the compiler fails with the exception "generator.exe" exited with code -1073741819.
This is a NULL pointer exception in the generator and searching the net i found some people who have the same problem and tells me that obfuscated code is not supported (that i understand). But how can i find the obfuscated code in the JAR file? Or is there a other problem that i'am not seeing.
If i need to post more project settings or envirioment/system parameters, please let me know
Such issues with Visual Studio can be fixed by repairing it.
You need to repair Visual Studio. Go to Control Panel -> Programs. Then select your version of Visual Studio you are using and press "Change"(or right click it and press "Change"). When the setup appears, click "Repair".
I got same error while create binding project, in my case the problem is in resource file, you need to add the jar file and resource file like,
bin - contains all jar files,
res - contains all resource files,
and add the compressed 'bin' folder in your project and build works fine.
I have VS2012 Express Web installed on my machine and can create all different kinds of Projects with exception of MVC3/MVC4 apps. When I click OK on the New Project dialog I get the Select A Template dialog. I notice that the Create a Unit Test Project checkbox is Disabled. Selecting any of the choices (such as Internet Application) gives me this same error: The system cannot find the file specified (Exception from HRESULT 0x80070002).
I have uninstalled and deleted the C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\VWDExpress\ProjectTemplatesCache and ItemsTemplateChache - and after removal deleted the entire VWDExpress directory so the fresh install would recreate all the templates. I've tried both the web-installer as well as the .iso installer. Has anyone seen this problem or have any idea why I can't create MVC3/MVC4 projects?
Any thoughts would be greatly appreciated. I have posted to the MSDN Newgroup and not had any luck there.
regards,
Bill
I had the same problem with a full installation of Visual Studio 2012. Uninstalling Visual Studio and everything it came with (SQL Server localDB, Silverlight SDKs etc), restarting, then reinstalling Visual Studio made it work.
Prior to re-installing, I ran ProcessMonitor during an attempt to create an MVC4 app and it kept trying to find an "extension.vsixmanifest" file but couldn't. I'm not sure which one, since I didn't try reinstalling all my extensions; maybe that will help.