Take this with a grain of salt, based on some stuff I've gleaned.

The QCExporter likely has to deal with conversions between different image 
types behind the scenes. QCImage consists of many different image types, and 
there are various converters and exporters which QCImageManager handles.

The other lines just have to do with the interface declarations for QCPatch; 
they just represent the methods that are called in the patch. I haven't thought 
it out too much, but on first glance it looks like it's probably referring to a 
consumer macro environment (because of executeSubatches…), that's maybe on 
external timebase(? the Customization execute:time:arguments), and it's 
probably also a private Apple macro patch happening in the composition. Not 
sure if that's actually where the crash is happening.

On May 18, 2013, at 2:26 AM, CoGe - Tamas Nagy <[email protected]> wrote:

> Hi,
> 
> last night I received a crash report from a user and it contains some 
> informations I never saw before.
> 
> Before the crash, I see this error message in the console, anyone have any 
> ideas with is that QCExporter class? It's maybe just an internal stuff which 
> responsible for rendering CI patches inside QC?
> 
> *** <QCExporter_CoreImage_Provider: 0x429490>: Failed creating texture buffer 
> from provider <QCPlugOutputImage = 0x421a80 | DOD = <QCRegion = 0x4f4700 | 
> rectangle = {{0, 0}, {1920, 1080}}> | colorspace = GenericRGB | alpha = 1 | 
> native pixel format = (null) | native target = (null) | capabilities = 100 >
> 
> From the crash report, this lines makes me curios, never saw them before:
> 
> 63  com.apple.QuartzComposer          0x95214fe3 -[QCPatch(Extensions) 
> executeSubpatches:arguments:] + 65
> 64  com.apple.QuartzComposer          0x95214f91 -[QCPatch(Customization) 
> execute:time:arguments:] + 61
> 65  com.apple.QuartzComposer          0x95215d34 -[QCPatch(Private) 
> _renderAtTime:arguments:] + 132
> 66  com.apple.QuartzComposer          0x9521cce4 -[QCContext 
> renderPatch:time:arguments:] + 846
> 67  com.apple.QuartzComposer          0x9521c925 -[QCGraphicsContext 
> renderPatch:time:arguments:] + 92
> 68  com.apple.QuartzComposer          0x9521b975 -[QCOpenGLContext 
> renderPatch:time:arguments:] + 557
> 69  com.apple.QuartzComposer          0x9521b73e -[QCPatch(Runtime) 
> render:arguments:] + 78
> 
> That "Private" thing makes me feel it was a Kineme plugin. Or maybe I am 
> wrong and its just an internal stuff in QC.
> 
> Thanks for any ideas,
> 
> Tamas
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