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Dataset not loaded successfully. Please redow

December 2, 2012 - 3:22pm #22

Hello, 


I'm working with vuforia SDK 1.5.9 on Xcode 4.2 on both an iPad v3 under iOS 5.1.1 and an iPhone 4 under iOS 5.1.1.

Everything went very well until today. For a reason that I tried to track down, all projects using the SDK are now broken on and only on the iPad v3. All is nice on the iPhone 4.


With a fresh install, when I run ImageTargets sample, I see this in the console :


2012-12-02 23:58:23.378 ImageTargets[463:707] APPSTATUS_LOAD_TRACKER

2012-12-02 23:58:23.381 ImageTargets[463:4007] INFO/AR(463) 2012-12-02 23:58:23: ImageTracker: Successfully created dataset

2012-12-02 23:58:23.435 ImageTargets[463:4007] ERROR/AR(463) 2012-12-02 23:58:23: Dataset StonesAndChips.dat not loaded successfully. Please redownload your dataset from the Target Management System. 

[Switching to process 9219 thread 0x2403]

2012-12-02 23:58:23.514 ImageTargets[463:4007] Failed to load data set.

2012-12-02 23:58:23.875 ImageTargets[463:4007] INFO/AR(463) 2012-12-02 23:58:23: ImageTracker: Successfully created dataset

2012-12-02 23:58:23.926 ImageTargets[463:4007] ERROR/AR(463) 2012-12-02 23:58:23: Dataset Tarmac.dat not loaded successfully. Please redownload your dataset from the Target Management System. 

2012-12-02 23:58:23.930 ImageTargets[463:4007] Failed to load data set.

2012-12-02 23:58:23.932 ImageTargets[463:4007] QCARutils: Failed to load any target


 

I tried everything : throw derived Data away from Xcode (even from the Finder), trash the app on the iPad, redownload the SDK, resart the iPad and the Mac, I even tried to manipulate the loading process in the QCARUtils class to check the path at serveral points, then thrashed everything again, installed from scratch again and again... But no way, it always fails ONLY on the iPad!!


What's going on ? How could it be so different all of a sudden on the very same device in just a few seconds ? Everything was working well, then the second after everything is broken without any big change (the samples freshly downloaded are bugging!!).

Do anyone have an idea about that ? I spent almost all my day to understand what's the cause of this bug, but I give up here.


Can someone give me some hint ?


Thanks

Dataset not loaded successfully. Please redow

December 3, 2012 - 11:06am #21

If you PM me with a link to your datasets I can try them out

N

Dataset not loaded successfully. Please redow

December 5, 2012 - 2:19am #20

You already have the datasets as these are included in the samples. Every single vuforia project gives me this same error on this iPad, even freshly downloaded samples. Also, I tried with other iPads and there is no bug on those one, same thing with iPhones. So I just can imagine something went very bad on my iPad and broke something when I was debugging my project, as all my other projects can use app included ressources with no problem except the vuforia samples and it datasets.

I'll try to reset this iPad to see if it helps.

Dataset not loaded successfully. Please redow

December 5, 2012 - 2:48am #19

Ok - understood.

Thanks for clarifying.

N

Dataset not loaded successfully. Please redow

December 5, 2012 - 4:22am #18

Well, I did restore the iPad to have a fresh install and it is working now. I also restored my previous apps and setting after a first test, and it is still working now.

I have no idea how my iPad could be so "softwarely" damaged by vuforia projects at a particular point of the dev. process, but it happened...

Anyway, if I encounter the same problem again, I will report it.

Dataset not loaded successfully. Please redow

December 5, 2012 - 6:41am #17

Glad to hear it's working.

However it's unlikely that the failure was caused by Vuforia as millions of people have run thousands of apps without this happening.

Sometimes devices just need a reset.

N

Dataset not loaded successfully. Please redow

February 11, 2013 - 8:25am #16

Hello,

I'm having the same problem.

Running the sample code as well as my App, that depends on the Framework work on some devices. But on others the message "Dataset ***.dat not loaded successfully. Please redownload your dataset from the Target Management System." appears.

Redownloading the dataset does'nt help.

It's also strange that, the Apps work on one iPhone 5 with iOS 6.1 and do not on another iPhone 5 with the same iOS version.

Can someone give an advice?

Thanks and Regards,

Alia

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February 13, 2013 - 1:10am #15

PM me with a link to your dataset and I will aim to take a look later this week.

It's also strange that, the Apps work on one iPhone 5 with iOS 6.1 and do not on another iPhone 5 with the same iOS version.

Are you talking about the same problem here?

The reference point is to take the standard ImageTargets sample and see if the problem can be reproduced - that will be my first step, though it will help if you can try first.

thanks

N

Dataset not loaded successfully. Please redow

February 15, 2013 - 5:04am #14

Hi

I tried this on a range of different devices and was unable to reproduce the problem.

Are you finding that it is it specific to iOS6.1?

N

 

Dataset not loaded successfully. Please redow

February 20, 2013 - 2:28pm #13

I've just 'witnessed' a similar problem albeit on a handset a few thousand miles away from me. As far as I can tell the app ran fine until a day or so ago, then suddenly started reporting this dataset error. The only event we know of that could have happened around the time of it failing was the device was sync'd with iTunes for the first time.

We've tried everything including uninstalling the app, switching off and reinstalling, but we get the error all the time. The dataset that fails is our inbuilt default - the same as in all deliverables we've made and it works on other devices in the same office and in ours.

The symptoms are similar to when people have tried Vuforia with jailbroken phones where the security APIs are unavailable to 'unsign' the dataset.

Could it be that something in the iTunes sync is leaving the certificates in a broken state?

= MoLotus =

 

Dataset not loaded successfully. Please redow

February 21, 2013 - 2:36am #12

Could you please let me know which handset it was along with OS version?

Also, have you tried the built-in samples?  Do they exhibit the same behaviour?

Next up, have you tried your app with the default dataset?

I would like to try and narrow this down in order to reproduce.

 

thanks,

N

Dataset not loaded successfully. Please redow

February 21, 2013 - 8:22am #11

Hi Nalin,

We've reproduced the problem using the 'off the shelf' ImageTargets app.

The device is an iPhone 4S with iOS 5.1 (I will confirm that when the owner is online) - NOT jailbroken.

It seems increasingly like the key-chain is corrupted in some way, such that the signing check of the data-set fails.

= MoSR =

Dataset not loaded successfully. Please redow

February 22, 2013 - 9:02am #10

Thanks MoLotus,

A few questions:

  • Is the problem just that particular device?
  • If so does it run any other Vuforia apps or samples?
  • Did the problem seem to have anything to do with the iTunes  sync as alluded to in your previous post?
  • Have you witnessed it on any device local to you?
  • ...and the above is a basic Image Targets app from the 2.0 sdk?

thanks

N

Dataset not loaded successfully. Please redow

February 22, 2013 - 9:24am #9
  • Is the problem just that particular device? So far, YES
  • If so does it run any other Vuforia apps or samples? NO - we're going to test with "Maclaren P1" as well to show the problem with a commercial app.
  • Did the problem seem to have anything to do with the iTunes  sync as alluded to in your previous post? I can only say 'maybe' - the timing is not certain - but it is suspicious given the user had never sync'd before and the problem turned up the same day
  • Have you witnessed it on any device local to you? NO
  • ...and the above is a basic Image Targets app from the 2.0 sdk? YES

Our main concern is to have an answer that doesn't mean a complete restore of the handset to repair the problem for other end-users that get into this state - you've had a few reports of it on your site so I'm guessing some end users will see it.

I've not let our NY colleague restore her phone until I can fix it in the simplest way possible - trying profile deletion, then reset, then restore. If one of your people  know a way of rebuilding the key-chain without restoring the handset we could try that.

= MoSR =

 

Dataset not loaded successfully. Please redow

March 1, 2013 - 6:13am #8

We have confirmed:

  • Other commercial apps based on Vuforia don't work
  • Removing profiles doesn't fix it
  • Resetting the device doesn't fix it

That leaves us with a full reload of iOS and restore of content, unless you have other suggestions.

We're not worried about doing this for one phone, but having to tell users to do this if t should be a wider spread issue. How many reports are there of this now?

= MoSR =

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March 1, 2013 - 7:24am #7

Hi MoLotus,

Thanks for the update, and the clarification.

How many reports are there of this now?

Just the three on this forum.

 

We are discussing internally to see what we can do about this, and at minimum I will respond by next Wednesday with an update.

N

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March 1, 2013 - 7:51am #6

Hello,

 

as I still have the same problem, I hope the update on wednesday will fix it.

 

Thank you Nalin.

 

Regards,

Alia

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March 3, 2013 - 12:32pm #5

I did not say I would provide updated software - far from it.

I meant an information update only.

N

 

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March 12, 2013 - 2:06pm #4

FYI - after iTunes failed to restore their iPhone, our NY colleague took their phone to the retailer who restored it for them and lo, apps with Vuforia inside now work as intended.

The issue doesn't appear to be an epidemic, but as Vuforia-powered apps (ours, the Vuforia samples, McLaren P1 and a couple of others) were apparently the only apps that did not work, please consider what may be blocking them - it could be awkward to ask a user to restore their iPhone when all other apps appear to run okay. :-)

= MoSR =

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March 13, 2013 - 3:08am #3

Thanks for the update MoLotus,

We are trying to find a way forward as I am sure you can understand ;)

Hopefully someone will be in touch with you shortly.

N

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April 3, 2013 - 5:21am #2

Just to add to the reports, I've experienced the same issue today.

When transitioning away from the AR view, my application crashed with screen corruption and caused a reboot of the device (iPhone 5, iOS 6.1.3). This seemed to be a random crash; the same transition had worked fine several times before. After reboot, the application fails to load the data set as the other posters in this thread have described. I've tried deleting the application from the device, both cleaning and deleting derived data in Xcode, and rebooting both phone and mac. Other AR demos (both from the downloaded examples and previously developed in-house) also fail to load the data file now. The apps works fine on two other devices I have tested.

The keychain theory makes sense to me as this is the only data I'm aware of that can persist across application delete/reinstall cycles and is common across multiple applications. Would it be possible to add a call to the library which would enable developers to clear these keys, or supply the key names so we can manually clear the corrupt keys when this issue crops up? It seems the only other solution is to wipe the device which I'm very reluctant to do in this case.

Thanks in advance.

Dataset not loaded successfully. Please redow

April 9, 2013 - 4:11am #1

Hi Froist,

Apologies for the delay in replying.

Please can you contact me via PM as we would like to work with you in order to solve this problem.

 

thanks,

Nalin

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