blocks|key|402861|text|不幸的是，错误消息没有解释安装失败的原因。您可以查看~/Library/Logs/CoreSimulator/CoreSimulator.log，查看错误消息的其余部分是否包含更多信息。如果没有，请查看sim设备的系统日志：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|402862|sudo+xcode-select+-s+/Applications/Xcode-beta.app+#+if+you+haven’t+already
xcrun+simctl+spawn+booted+log+show|code-block|syntax|javascript|402863|您可以使用--predicate对其进行过滤。|offset|length|style|CODE|402864|entityMap^0|0|0|5|B|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Unfortunately, the error message doesn’t explain why the install failed. You can take a look at ~/Library/Logs/CoreSimulator/CoreSimulator.log to see if the rest of the error message is there with more info. If not, you should check out the sim device’s system log:

<pre><code>sudo xcode-select -s /Applications/Xcode-beta.app # if you haven’t already
xcrun simctl spawn booted log show
</code></pre>

You can use <code>--predicate</code> to filter that down a bit.

blocks|key|3440730|text|回答晚了，但这可能对其他人有用。我只是得到了一个项目与现有的手表套件和自定义键盘代码。在更改标识符之后，我得到了相同的错误，我花了一天的时间来找出为什么会发生这种情况。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3440731|我检查了所有包的id和所有版本。然后，我使用旧标识符在xcode中进行全局搜索，结果如下所示。|3440732|​|3440733|📷|atomic|offset|length|3440734|3440735|这里两个.plist文件都有旧的WKCompanionAppBundleIdentifier，所以在我用新的手动更新它之后，应用程序再次运行。|style|BOLD|3440736|重要说明：|3440737|如果您只是将标识符从常规选项卡更改为|3440738|，这并不意味着它完全更新。请通过搜索检查所有可能的位置，并将其替换为新的标识符。|blockquote|3440739|3440740|3440741|XCODE+VERSIO:+Version+9.0+(9A235)|code-block|syntax|javascript|3440742|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/a1077c161ff64c47c6c9b3eefb59ed20.png|imageAlt^0|0|0|0|0|1|0|0|0|G|U|0|0|5|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1D|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1E|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|1F|8|@]|9|@$I|1G|J|1H|1|1I]]|A|$]]|$1|K|3|E|5|6|7|1J|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1K|8|@$I|1L|J|1M|N|O]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1N|8|@$I|1O|J|1P|N|O]]|9|@]|A|$]]|$1|R|3|S|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|T|3|U|5|V|7|1R|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1S|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|10|7|1U|8|@]|9|@]|A|$11|12]]|$1|13|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|14|$15|$5|16|17|18|A|$19|1A|1B|-4]]]]

Late answer but might be that can be useful for others. I just get a project with existing watch-kit and custom keyboard code. After change the identifier i got the same error and i spend 1 day to find out why that happens. 

I checked everything of bundle id and all version. then i do global search in xcode with old identifier and i found that following.

<a href="https://i.stack.imgur.com/KDcb4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/KDcb4.png" alt="enter image description here"></a>

Here in both .plist file have old WKCompanionAppBundleIdentifier so after i update it with new manually application run again.

IMPORTANT NOTE:

<blockquote>
 IF YOU ARE JUST CHANGE IDENTIFIER FROM GENERAL TAB THAT DOES NOT MEAN IT UPDATE AT ALL. KINDLY CHECK WITH ALL POSSIBLE PLACES BY SEARCH AND REPLACE IT WITH NEW IDENTIFIER.
</blockquote>

<pre><code>XCODE VERSIO: Version 9.0 (9A235)
</code></pre>

blocks|key|3227209|text|我遇到了同样的问题，快速点击Product+>+Clean帮我解决了这个问题！|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3227210|entityMap|0|LINK|mutability|MUTABLE|url|https://i.stack.imgur.com/weReK.png^0|E|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I ran into this same issue and a quick click on <a href="https://i.stack.imgur.com/weReK.png" rel="nofollow noreferrer">Product > Clean</a> did the trick for me!

blocks|key|3440458|text|如果您在项目中使用CocoaPods，请查看以下答案：https://stackoverflow.com/a/44533287/221194|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3440459|更改pods子目录的状态对我的项目很有帮助。|3440460|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/44533287/221194^0|R|17|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

If you are using CocoaPods in your project please have a look at this answer: <a href="https://stackoverflow.com/a/44533287/221194">https://stackoverflow.com/a/44533287/221194</a>

Changing the status of the pods subdirectory helped me with my project.

blocks|key|3440601|text|当我在IOS模拟器(使用Xcode9)上安装我的应用程序时，我遇到了类似的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3440602|我发现这个问题(至少在我的案例中)，它是由于手表应用程序的info.plist中的一个未经授权的密钥(使用时的隐私位置使用说明)。|3440603|我已经将这个密钥移到了WatchKit扩展的info.plist中，现在应用程序再次安装。|3440604|我希望它能帮助其他有同样问题的人。|3440605|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

I had a similar issue when installing my App on the IOS simulator (with Xcode 9).

I found the issue (at least for my case), it was due to an unauthorized key (Privacy - Location When In Use Usage Description) in the info.plist of the Watch App.

I have moved this key to the info.plist of the WatchKit Extension and now the App installs again.

I hope it will help others people having the same issue.

blocks|key|402858|text|根据需求更改部署目标。选择项目>常规>部署目标还检查设备的ios版本|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|402859|entityMap^0|B|C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

change deployment target as per requirement.
select project > GENERAL > DEPLOYMENT TARGET
also check ios version of your device

blocks|key|397027|text|我也有同样的问题。日志显示这是由Google登录引起的错误：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|397028|FunctionName=-[MobileInstallationHelperService+stageItemAtURL:completion:],+SourceFileLine=392,+NSUnderlyingError=0x7f891e9a1270+{Error+Domain=MIInstallerErrorDomain+Code=4+"Failed+to+remove+ACL"+UserInfo={NSLocalizedDescription=Failed+to+remove+ACL,+FunctionName=-[MIFileManager+_removeACLAtPath:isDir:error:]|code-block|syntax|javascript|397029|然而，它在iOS+9和10模拟器上工作。|397030|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had the same issue. Log shows it's an error caused by Google Signin:

<pre><code>FunctionName=-[MobileInstallationHelperService stageItemAtURL:completion:], SourceFileLine=392, NSUnderlyingError=0x7f891e9a1270 {Error Domain=MIInstallerErrorDomain Code=4 "Failed to remove ACL" UserInfo={NSLocalizedDescription=Failed to remove ACL, FunctionName=-[MIFileManager _removeACLAtPath:isDir:error:]
</code></pre>

However it works on iOS 9 &amp; 10 simulator.

blocks|key|397032|text|我得到了同样的错误，我在我的项目中使用Cocoapods，对我来说，只需要更新pods即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|397033|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I got same error and I was using Cocoapods in my project and for me help just update pods.

blocks|key|399333|text|我在Xcode9.0beta5中重新命名了一个包含iOS和watchOS应用程序的项目后遇到了这个问题。为了解决这个问题，我重新创建了iOS目标。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|399334|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I ran into this issue in Xcode 9.0 beta 5 after renaming a project that contained an iOS and watchOS app. To fix, I recreated the iOS target.

blocks|key|3440752|text|但是，如果您查看~/Library/Logs/CoreSimulator/CoreSimulator.log上的日志，并指出以下错误，则可能会引发此问题：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3440753|3440754|+NSUnderlyingError=0x7fb51c271ee0无法将副本/originPath硬链接到/destinationPath|blockquote|3440755|3440756|3440757|您的项目目标设置中的内部版本号可能设置为空。|3440758|转到Project+Target+>+Identity+>+Build并设置内部版本号。在安装更新版本之前，您必须在模拟器中卸载该应用程序并重新安装它。|3440759|entityMap^0|8|1A|0|0|0|0|0|0|2|X|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|U|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|V|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|W|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|X|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|Y|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|Q|$]]

This issue could be triggered by multiple things however if you take a look at the logs at <code>~/Library/Logs/CoreSimulator/CoreSimulator.log</code> and it states an error that reads :

<blockquote>
 NSUnderlyingError=0x7fb51c271ee0 Could not hardlink copy /originPath
 to /destinationPath
</blockquote>

it's possible that your Build number in your Project Target's settings is set to empty. 

Go to <code>Project Target &gt; Identity &gt; Build</code> and set a Build number. You'll have to uninstall the the app in the simulator and re-install it before installing updated versions.

blocks|key|399460|text|请检查捆绑包标识符以解决此问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|399461|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Please check the bundle identifier to solve the issue.

blocks|key|397343|text|当我想手动将XCode地图框架添加到我的项目中时，我在google+9.3.1上也遇到了同样的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|397344|为了解决这个问题，我从嵌入式二进制文件中删除了google框架...|397345|​|397346|📷|atomic|offset|length|397347|397348|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/6f554ecc3bda0df9b46660e10cde42b3.png|imageAlt^0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@$I|Y|J|Z|1|10]]|A|$]]|$1|K|3|E|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

I had the same issue on XCode 9.3.1 when I wanted to add google map framework to my project manually.

To fix the problem I remove the google frameworks from Embedded binaries...

<a href="https://i.stack.imgur.com/kBk1D.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kBk1D.png" alt="enter image description here"></a>

I downloaded Xcode 9 beta recently, and when I tried to run my app in the simulator it is not getting installed. I am getting this error in my Xcode every time I try to run the app.
<blockquote>
This app was unable to be installed.
</blockquote>
<a href="https://i.stack.imgur.com/adgJs.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/adgJs.jpg" alt="enter image description here" /></a>
The application used to work in Xcode 8.3.3

Unable to install app in simulator Xcode 9 beta

我最近下载了Xcode9测试版，当我试图在模拟器中运行我的应用程序时，它没有安装。每次我尝试运行这个应用程序时，我都会在我的Xcode中得到这个错误。无法安装此应用程序。​​该应用程序曾在Xcode 8.3.3中运行

问无法在模拟器Xcode 9测试版中安装应用程序
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