iOS simulator: could not hardlink copy. Wrong path in my filesystem?

Question

I am using Xcode Version 6.1 (6A1052d)

I am trying to launch an app on the simulator.

The first time it always works fine. If I want to launch a second time, I have an error (see log below). Then in iOS simulator I "Reset Content and Settings" and I can launch again successfully.

Given the error log, I think it must have something to do with a wrong path. The problem is I am bad with Mac filesystem and path linking, so your help would be much appreciated.

EDIT: Here is the info.plist.xml (generated by LibGDX if it matters)

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleDisplayName</key>
    <string>${app.name}</string>
    <key>CFBundleExecutable</key>
    <string>${app.executable}</string>
    <key>CFBundleIdentifier</key>
    <string>${app.id}</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>${app.name}</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleShortVersionString</key>
    <string>${app.version}</string>
    <key>CFBundleSignature</key>
    <string>????</string>
    <key>CFBundleVersion</key>
    <string>${app.build}</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>UIViewControllerBasedStatusBarAppearance</key>
    <false/>
    <key>UIStatusBarHidden</key>
    <true/>
    <key>UIDeviceFamily</key>
    <array>
        <integer>1</integer>
        <integer>2</integer>
    </array>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
        <string>opengles-2</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <!-- <string>UIInterfaceOrientationPortrait</string> -->
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>CFBundleIcons</key>
    <dict>
        <key>CFBundlePrimaryIcon</key>
        <dict>
            <key>CFBundleIconFiles</key>
            <array>
                <string>Icon</string>
                <string>Icon-72</string>
            </array>
        </dict>
    </dict>
</dict>
</plist>

And my robovm.xml:

app.version=1.0
app.id=<my package name>.IOSLauncher
app.mainclass=<my package name>.IOSLauncher
app.executable=IOSLauncher
app.build=1
app.name=<my app name>

I have tried to identify more precisely the error thanks to the advice of Jeremy, in the system.log inside the folder of my virtual device. The system.log has a lot of entries around the time of the crash, so I might have missed something... Anyway I have found these potentials errors:

Nov 28 09:03:44 As-MacBook-Pro installd[668]: 0x10e3d0000 createDictFromFile: open failed for /Users/<myname>/Library/Developer/CoreSimulator/Devices/D1C6E4CE-ABF3-4621-B811-913F1705CBE0/data/Containers/Bundle/Application/CA2B6D8C-1A62-4DA6-8433-AA4678D009E1/ManifestCache.plist : No such file or directory

Nov 28 09:03:44 As-MacBook-Pro installd[668]: 0x10e4d6000 writeDictToFile: ==== Successfully wrote Manifest cache to /Users/<myname>/Library/Developer/CoreSimulator/Devices/D1C6E4CE-ABF3-4621-B811-913F1705CBE0/data/Library/Caches/com.apple.mobile.installd.staging/temp.gCGKCY/extracted/ManifestCache.plist

Nov 28 09:03:44 As-MacBook-Pro installd[668]: 0x10e3d0000 validate_stream: Got manifest for version "1 1.0", but expected version "1 "

Nov 28 09:03:44 As-MacBook-Pro installd[668]: 0x10e3d0000 hardlink_copy_hierarchy: Failed to open manifest /Users/<myname>/Library/Developer/CoreSimulator/Devices/D1C6E4CE-ABF3-4621-B811-913F1705CBE0/data/Library/Caches/com.apple.mobile.installd.staging/temp.gCGKCY/extracted/com.apple.deltainstallcommands.<my app.id>

The original crash log from Eclipse console (device name folders are different as I have tested on multiple virtual devices, but the error is always the same)

11/27/14 9:58:17 AM: [ERROR] Session could not be started: 
Error Domain=LaunchServicesError 
Code=0 "Unable to run app in Simulator" UserInfo=0x7fc8eb900d70 
{Error=PackagePatchFailed, ErrorDescription=Could not hardlink copy 
/Users/<myname>/Library/Developer/CoreSimulator/Devices/055A18BC-73B5-4EA6-A872-488FA69F4750/data/Containers/Bundle/Application/CCF8C472-C48F-41D7-8885-E83830256EE3/IOSLauncher.app 
to 
/Users/<myname>/Library/Developer/CoreSimulator/Devices/055A18BC-73B5-4EA6-A872-488FA69F4750/data/Library/Caches/com.apple.mobile.installd.staging/temp.TsGEn1/extracted/Payload/IOSLauncher.app 
with manifest 
/Users/<myname>/Library/Developer/CoreSimulator/Devices/055A18BC-73B5-4EA6-A872-488FA69F4750/data/Library/Caches/com.apple.mobile.installd.staging/temp.TsGEn1/extracted/com.apple.deltainstallcommands.<pathtomyappexec>, 
NSLocalizedFailureReason=An error was encountered while running 
(Domain = LaunchServicesError, Code = 0), 
NSUnderlyingError=0x7fc8ebb1a500 "The operation couldn’t be completed. 
(LaunchServicesError error 0.)", 
NSLocalizedDescription=Unable to run app in Simulator}

Answer 1

I faced this error while leaving Build field blank using only Version on General tab. The error has gone after setting a build value and reinstalling the app.