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 ?