How to debug Core Data validation error code zero (0)? - objective-c

When I call save on the Core Data managed object context while running the application in the simulator (iOS 5.1.1, XCode 4.4.1) I get two of the following validation errors:
Error Domain=CollectionItemError Code=0 "The operation couldn’t be completed. (CollectionItemError error 0.)"
Since there is an error code of zero (0) I'm not sure how to debug the problem. Suggestions?

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Kotlin/Native compilation fails on windows with Java ZipException

I've created a new Kotlin/Native application using IntelliJ Idea and it fails to compile.
I hadn't change anything.
I'm sure it fails at compilation time because it says "Compilation ended with errors"
Stack trace: java.util.zip.ZipException: invalid stored block lengths...

downloading from a clickonce deployment

I publish my vb.Net windows form app to a location in the server for users to install on their machines. It starts running for about 32% and errors with the following message: Application validation did not succeed. Unable to continue.
Details:
ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of \MyServer\Dep\Databases\Apps\MyApp.application resulted in exception. Following failure messages were detected:
+ Reference in the manifest does not match the identity of the downloaded assembly TsLibGen.exe.
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App authenticity is giving a different error

I am trying to implement app authenticity on android native app. It works fine I am able to get fail on app authenticity failure .. But the problem is I am getting an error saying .
Unexpected errorCode occurred. Please try again.
But what I am expecting is. I was seeing this error before yesterday, But from yesterday I am seeing "Unexpected errorCode occurred. Please try again.". I took an update can that be a cause.
app authenticity security check failed
And I am also seeing below error, even before fail is being called.
07-27 05:30:02.392 15664-15664/com.ds I/MultiDex: VM has multidex support, MultiDex support library is disabled.
07-27 05:30:02.392
15664-15664/com.ds I/MultiDex: install
07-27 05:30:02.392
15664-15664/com.ds I/MultiDex: VM has multidex support, MultiDex
support library is disabled.
07-27 05:30:02.448 15664-15686/com.ds
W/com.worklight.common.Logger:
com.worklight.common.Logger.setContext(Context) must be called to
fully enable debug log capture. Currently, the 'capture' flag is set
but the 'context' field is not. This warning will only be printed
once.
07-27 05:30:03.493 15664-15670/com.ds W/art:
Suspending all threads took: 149.185ms
I was checking the value(App authenticity failure message) by
calling wlFailResponse.getErrorMsg() which was giving me
"Unexpected errorCode occurred. Please try again."
But the actual value(App authenticity failure message) that i am looking for
was in wlFailResponse.getResponseJSON().getString("reason").

TouchID crash on some iPhone 5S devices

My app crashes on some iPhone 5S device (only some) with the error:
Fatal Exception: NSInternalInconsistencyException Unexpected error:
Error Domain=NSCocoaErrorDomain Code=4097 "The operation couldn’t be
completed. (Cocoa error 4097.)" (connection to service named
com.apple.CoreAuthentication.daemon) UserInfo=0x174461dc0
{NSDebugDescription=connection to service named
com.apple.CoreAuthentication.daemon}
The line which breaks the app is the following:
LAContext().canEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, error: nil)
Is this an Apple bug?
What am I doing wrong here?
It's an iOS bug. When an API returns a 4097 error, it usually means that the system daemon that was responsible for handling your request crashed. You can look for crash logs from the device and file a bug with Apple.

Tableview doesn't load with error "Failed to load resource" on Android 2.2

My app works fine on the iPhone simulator. However, when I launch the Android 2.2 simulator, the app loads (all the tabs appear) but then it crashes before my TableView appears. Here's the error:
E/TiJSError( 269): (main) [644,1030] ----- Titanium Javascript Runtime Error -----
E/TiJSError( 269): (main) [1,1031] - In ti:/titanium.js:178,19
E/TiJSError( 269): (main) [0,1031] - Message: Uncaught Error: Failed to load resource, Java exception was thrown.
E/TiJSError( 269): (main) [1,1032] - Source: source = assets.readAsset(assetPath);
E/V8Exception( 269): Exception occurred at ti:/titanium.js:178: Uncaught Error: Failed to load resource, Java exception was thrown.
Does this have anything to do with memory? How can I fix this?
Thanks!!
I had a similar problem, and it turned out to be a memory issue.
Try inserting the following line into tiapp.xml:
<property name="ti.android.threadstacksize" type="int">32768</property>
Then clean the Android build folder and run the app again. I hope it works for you!