Why XControl's reference is invalid?

There are 60 XControls on front panel.I get their reference by a subvi and then output their label text by property node.It's ok when vi run in labview 8.5 IDE.Then I build the program to exe file.The refrence is invalid when I run the exe file .So what's wrong about the exe file?
Thanks!

I hava sloved my problem .The problem occured when a common reference translated into special reference .Jsut like the image:
When running the exe file,CargoBlock reference is invalid.But I change the method that gets CargoBlock reference ,as follows:
The problem disappears...

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I get error 1055 "Object Reference Is Invalid" when I try to write to a property node

Hi, I'm trying to get these results to be displayed in two tables now, where I originally had them being displayed in just one. Outside of the attached vi, I can just copy the value property from one table to the other after this vi has run, and the table values appear properly. The problem with that is, that any table property I assign (changing background colours to be exact), is not considered part of the value property, and thus isn't copied when I copy the value from one to the other.
The thing I can't understand is that the second set of property nodes (at the bottom), give me the "Object Reference Is Invalid" when I added them. I've tried everything I can think of, but can see no logical reason why I get that error for those two, while I don't get the error for the top two (not wired to constants).
Any help on this would be much appreciated. Thanks
Geoff
Attachments:
Table Display Testing.vi ‏396 KB

The logical reason that you're getting that error is that you are not passing in a reference to Table In Two. The control is not wired to the connector pane so you are not getting a reference from the calling VI.

Why is my security always invalid? I haven't been able to download any apps!

Why is my security always invalid? I haven't been able to download any apps!

Contact iTunes store support: http://www.apple.com/emea/support/itunes/contact.html

When do VI and queue references become invalid?

Hi all,
I have a fairly complicated problem, so please bear with me.
1) I have a reentrant SubVI (let's call it VI "Assign") that has an input cluster of (VI ref, queue ref) (let's call the cluster type "Refs"). If the VI ref is invalid (first execution), the VI ref and queue ref are assigned values and are passed on as an output cluster of same type. (The VI does other things too, but for simplicity only this is important.)
2) The VI that calls VI "Assign" (let's call it VI "Store") is not reentrant and has a local variable of type "Refs" that is wired to the input and output of VI "Assign". This VI effectively stores the references. The references returned by VI "Assign" are always valid right after the call, but after the problem condition described below, they are invalid at the start of all calls before they are passed to VI "Assign".
3) VI "Store" is called by multiple non-reentrant VIs, so the local variables of VI "Assign" retain their values (Has been tested and verified to retain their values). The VI causing the problem in this case is a template VI of which multiple copies are launched (let's call it VI "Template").
The problem is that the moment an instance of VI "Template" is closed, the queue reference becomes invalid, although the actual variant value of the reference remains the same. The VI ref can become invalid or not, depending on small changes, but is always reproducible. I assume there must be some similarity between VI and queue refs. After spending some time researching, the Labview help states for the Open VI Ref component "If you do not close this reference, it closes automatically after the top-level VI associated with this function executes." In this case I assumed it means that the moment the reentrant VI "Assign" finishes, the references will get cleared ?? So I made a non-reentrant VI (let's call it VI "NR Assign") that only assigns values to the references and VI "Assign" now calls this VI (It effectively does what I described VI "Assign" does). I keep this VI alive by using it in a VI which never terminates and since it never terminates, the references should never become invalid. Anyone still following? This didn't solve the problem though. If I reproduce the same scenario using only one instance of the template VI, it works just fine. Furthermore, the VI and queue references are never closed, to aid analysis of the problem. Can anyone shine some light on what happens when a template VI terminates? Could this be the problem?
Unfortunately I cannot include the code.
Thank you whoever is able to make sense of this.
Christie

Christie wrote:
Hi all,
I have a fairly complicated problem, so please bear with me.
1) I have a reentrant SubVI (let's call it VI "Assign") that has an input cluster of (VI ref, queue ref) (let's call the cluster type "Refs"). If the VI ref is invalid (first execution), the VI ref and queue ref are assigned values and are passed on as an output cluster of same type. (The VI does other things too, but for simplicity only this is important.)
2) The VI that calls VI "Assign" (let's call it VI "Store") is not reentrant and has a local variable of type "Refs" that is wired to the input and output of VI "Assign". This VI effectively stores the references. The references returned by VI "Assign" are always valid right after the call, but after the problem condition described below, they are invalid at the start of all calls before they are passed to VI "Assign".
3) VI "Store" is called by multiple non-reentrant VIs, so the local variables of VI "Assign" retain their values (Has been tested and verified to retain their values). The VI causing the problem in this case is a template VI of which multiple copies are launched (let's call it VI "Template").
The problem is that the moment an instance of VI "Template" is closed, the queue reference becomes invalid, although the actual variant value of the reference remains the same. The VI ref can become invalid or not, depending on small changes, but is always reproducible. I assume there must be some similarity between VI and queue refs. After spending some time researching, the Labview help states for the Open VI Ref component "If you do not close this reference, it closes automatically after the top-level VI associated with this function executes." In this case I assumed it means that the moment the reentrant VI "Assign" finishes, the references will get cleared ?? So I made a non-reentrant VI (let's call it VI "NR Assign") that only assigns values to the references and VI "Assign" now calls this VI (It effectively does what I described VI "Assign" does). I keep this VI alive by using it in a VI which never terminates and since it never terminates, the references should never become invalid. Anyone still following? This didn't solve the problem though. If I reproduce the same scenario using only one instance of the template VI, it works just fine. Furthermore, the VI and queue references are never closed, to aid analysis of the problem. Can anyone shine some light on what happens when a template VI terminates? Could this be the problem?
Unfortunately I cannot include the code.
Thank you whoever is able to make sense of this.
Christie
All LabVIEW refnums do get deallocated automatically when the top-level VI in whose hierarchy the refnum was created goes idle (stops executing). You will have to make sure that the creation of a refnum is done inside a VI hierarchy that stays running for the entire time you want to use that refnum.
Rolf Kalbermatter
Message Edited by rolfk on 06-27-2007 11:52 AM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Error: demo.model.AppModule: Application module demo.model.AppModule has a view instance EmpByEmail1 that references an invalid view object.

Error: demo.model.AppModule: Application module demo.model.AppModule has a view instance EmpByEmail1 that references an invalid view object.
intially i created view object named EmpByEmail.........for that EmpByEmail1 is created in datacontrols....i deleted EmpByEmail in demo.model by mistake and i created again with same name EmpBYEmail another view object...again another EmpByEmail2 is created in datacontrols.....
while i am running i am getting following error:::::::
Error: demo.model.AppModule: Application module demo.model.AppModule has a view instance EmpByEmail1 that references an invalid view object.

Hi,
Please seasrch for the EmpByEmail1 file in ur project and remove all the details in the Page Def and UI and then try again.
Due to the EmpByEmail1 existance in page Def this may occur . It may help , still if it was not working then I am sorry for that.

On cRIO-9033, property node: Owning VI Reference is Invalid

I am starring for the first time to work with a UI on cRIO-9033. The code I am trying to adapt to work on the RT is working on Windows just fine. But when I put it on the RT it throws errors. I looked through the code and I kept getting error 1026 Reference is No Longer Valid. I made a very simple code to try and run (as linked below), and it throws the same error.
When I probe the error coming out of the VI Property Node: Panel, it gives me an Invalid Reference Error. Nothing closed the reference and the VI is obviously still running and in memory since this is the VI. I'm not sure what is wrong. Could it be that I am running it from development environment? Or is this a quirk with programming in Linux?
Attachments:
Simpler UI.vi ‏16 KB

I found another bug. You just to follow my instructions if you don't mind
Open the attached code
Run it. It should work fine
Move anything on the front panel and save it
Run it. You should get errors.
I'm not sure what is wrong but I can reproduce the problem over here.
BEFORE IMAGE
AFTER IMAGE
notice the I moved error out 2
Actually on my more complicated example the property node giving the panel references passes invalid references all the time. Not just when I resave it.
Attachments:
Simpler UI.vi ‏19 KB

Why we need reference in java?

Hi
I faced one problem while I was doing heapdump analysis.I had to find memory leak suspect.
Somewhere in parent node I have found soft reference.
My question is that why we need reference in java?
and why IBM jdk1.4.2 and above have inbulit class like
softreference
weakreference
phatomreference

These Reference objects have special ways of interacting with the garbage collecor. A normal reference is, in comparison, called a "hard" reference. If an object is only reachable through a special reference it is said to be "softly reachable" or the like, and the garbage collector can collect it. When this happens the reference object is cleared, and will return null if you try to acccess the object through it.
SoftReference tells the garbage collector "On the whole I'd like you to hang on to this, but feal free to delete it if you're short of space."
Weakly and Phantom reachable objects are collected as normal.
A typical use of a WeakReference is when you want to hold onto a pointer to an object as long as that object exists, but allow it to be collected when there are no other references. For example, some object might listen for events on some window, but if you abandon the object you don't want the listener to prevent the object being disposed of.
A typical use of a SoftReference is when you've arrived at some sizable data object through a moderately expensive process e.g. retrieving it from a database. You can rebuild it if it's lost, but you can save time if it's still there when you want it again.
A PhantomReference is used instead of finalize(). You can arrange for references to be added to a queue when cleared, and you can have a background thread removing references from the queue and doing what you like with them. By extending the Reference type you can store information needed for a clean-up.

The security-role-assignment references an invalid security-role: Certifica

In Oracle Enterprise Pack for Eclipse, I failed to deploy an application in debug mode. The error I noticed in my domain log is:
weblogic.management.DeploymentException: [HTTP:101168]The security-role-assignment references an invalid security-role: Certificate.
     at weblogic.servlet.security.internal.WebAppSecurity.setRoleMapping(WebAppSecurity.java:180)
     at weblogic.servlet.security.internal.WebAppSecurity.registerSecurityRoles(WebAppSecurity.java:155)
     at weblogic.servlet.internal.WebAppServletContext.prepareFromDescriptors(WebAppServletContext.java:1181)
     at weblogic.servlet.internal.WebAppServletContext.prepare(WebAppServletContext.java:1120)
     at weblogic.servlet.internal.HttpServer.doPostContextInit(HttpServer.java:449)
     at weblogic.servlet.internal.HttpServer.loadWebApp(HttpServer.java:424)
     at weblogic.servlet.internal.WebAppModule.registerWebApp(WebAppModule.java:910)
     at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:364)
     at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:176)
     at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:93)
     at weblogic.application.internal.flow.DeploymentCallbackFlow$1.next(DeploymentCallbackFlow.java:387)
     at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
     at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:58)
     at weblogic.application.internal.flow.DeploymentCallbackFlow.prepare(DeploymentCallbackFlow.java:42)
     at weblogic.application.internal.BaseDeployment$1.next(BaseDeployment.java:615)
     at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:37)
     at weblogic.application.internal.BaseDeployment.prepare(BaseDeployment.java:191)
     at weblogic.application.internal.EarDeployment.prepare(EarDeployment.java:16)
     at weblogic.application.internal.DeploymentStateChecker.prepare(DeploymentStateChecker.java:155)
     at weblogic.deploy.internal.targetserver.AppContainerInvoker.prepare(AppContainerInvoker.java:60)
     at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:197)
     at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:89)
     at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:217)
     at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:723)
     at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1190)
     at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:248)
     at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:159)
     at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:157)
     at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:12)
     at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:45)
     at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:516)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
What I do not understand is that this error remains even though I modified weblogic.xml to remove the following lines:
<wls:security-role-assignment>
<wls:role-name>Certificate</wls:role-name>
<wls:externally-defined/>
</wls:security-role-assignment>
I also deleted <MYDOMAIN_HOME>/servers/AdminServer/cache and <MYDOMAIN_HOME>/servers/AdminServer/tmp but this error still showed up when I attempted to deploy the application in Eclipse.
If I exported the EAR file and deployed it using Admin Console, the application was deployed successfully. But when I deleted it in Admin Console and attempted to deploy it in Eclipse again, the same error occurred and the deployment failed. What could be the reason for this behavior? Is there anything cached somewhere when deploying it in Eclipse? Thanks in advance for your help.

Hi,
I know that is an old thread, but just in case... Maybe you could try setting up the DEBUG_OPTIONS in your startManagedWeblogic script and configure a remote debug in Eclipse:
DEBUG_OPTIONS="-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=8003,server=y,suspend=n"
Hope it helps,
Luis

When i wanted to buy a gift card, An alert pops up stating that the id is not eligible to do so!!! Why? in reference to the indian itunes store

hen i wanted to buy a gift card, An alert pops up stating that the id is not eligible to do so!!! Why? in reference to the indian itunes store

Contact iTunes Customer Service and request assistance
Use this Link > Apple Support iTunes Store Contact

Why do I get an "invalid signature" message when trying to download the latest version of iTunes?

Why do I get an "invalid signature" message when trying to download the latest version of iTunes? Apple Support is the lamest excuse for support I have EVER seen.

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http://www.apple.com/itunes/download/
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Why do i get the invalid signature error

Why do I get the invalid signature error when trying to download the latest updates fot itunes

Hi, im getting the same thing,
Been tryin to download it for days but keeps saying "Invalid signature"
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I purchased a gift card and entered the code to redeem it; however, i never used it. i initially had trouble setting up my itune account and had to create a new acct. is this why my gift card is invalid?

i purchased a gift card and entered the code to redeem it; however, i never used it. i initially had trouble setting up my itune account and had to create a new acct. is this why my gift card is invalid?

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Why do l get an Invalid URL when l try to login to facebook? Invalid URL The requested URL "/?ref=home", is invalid. Reference

More than half the time, when l try to login to facebook l get an "Invalid URL" message or a box pops up with 'warning, certificate did not match hostname'' and sometimes l get a really weird version of fb. Also sometimes when l go other places on the internet the warning pops up about facebook. Help please!!

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
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"Remove Cookies" from sites causing problems:
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*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Why Package Specification only in INVALID State

Hi All,
Why Package spec is going to invalid state when I change a Procedure which is called in Package body
and why package body is still in VALID state. Can some one please clarify my doubt.

May be only specification got errors and not the package.
May be the constants / variables declared in package specification has wrong reference
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OR
V number(1) :=10;
or
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Why XControl's reference is invalid?

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