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Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

XCubed — Thu, 05 Mar 2009 21:33:54 GMT

Stefan, is there is a reason why the fix has been postponed until Silverlight 3? I was kinda hoping it might have been part of last month's update.

Our Silverlight application is currently experiencing this issue with increasing regularity. If it was just an exception being thrown, we could handle it and try again, but the entire browser crashing out without an error message is not something our customers will appreciate. Changing the tile format from PNG to JPEG is not a viable option for us.

Are there any other workarounds we can try?
Can you provide specific information on why the issue occurs so that we can avoid it?

I find it puzzling that the error is occurring in the JPEG decoder functions too, when we're using PNG tiles. Can you elaborate on why that's the case?

Thanks,
Carey

Re: Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Tue, 24 Feb 2009 09:52:11 GMT

Good news, thanks.

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

StefanWick — Tue, 24 Feb 2009 08:47:32 GMT

We were able to replicate the problem based on the information that was provided in this thread. Silverlight 3 will include the fix.

Thanks, Stefan Wick

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Tue, 24 Feb 2009 07:43:37 GMT

Yes Stefan's posts are very usefull :))

Now I must convert my 5 TB image database into jpg .... ha ... ha ... very funny

If you need application that reproduce bug I'll try to extract it from my system and provide it with image DB

P.S. I expressed my opinion in Russian because I tired dancing with tambourine aroung Silverlight

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

netghost — Tue, 24 Feb 2009 02:26:38 GMT

Dvladimir:

Похоже друзья из Макрософт забили на нашу проблему, выпустили глючный продукт, а поддержки 0.

P.S. My opinion about problem solving from Microsoft, in Russian

Why are you saying we provide no support? Look at all Stefan's posts up the thread... He was trying to get as much analysis as possible from you, guys, but it's really hard to chase down a bug, if there's no consistent repro (or at least an app, that would repro the bug at least randomly).

PS: What was the point of expressing your thoughts in Russian?

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Mon, 23 Feb 2009 17:27:32 GMT

Похоже друзья из Макрософт забили на нашу проблему, выпустили глючный продукт, а поддержки 0.

P.S. My opinion about problem solving from Microsoft, in Russian

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

tiagonmas — Tue, 16 Dec 2008 15:48:59 GMT

Hi!

Today I recreated my deep zoom project and exported it. The error seemed to never happen again.

When I had the error it only happened when I used the ScaleTransform.

I've always been exporting as JPEG...

Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Jim Lynn — Mon, 15 Dec 2008 21:09:28 GMT

You say your MSIs are using JPGs, but do you mean the source images or the output of Deep Zoom Composer?

In your dzi file, in the first <Image> tag, does it say Format="jpg" or Format="png"?

I've suffered from this error when using a PNG-output deep zoom image, but I've been successfully developing exactly the same codebase with the tiles converted to jpeg and it hasn't crashed once.

I know that doesn't help you much if your DZI is jpeg, but if it happens to be a PNG DZI you could regenerate it in JPG format and the problem would go away.

Jim.

Re: RC0: Unexpected iexplore.exe: Silverlight crash

tiagonmas — Sat, 13 Dec 2008 21:21:03 GMT

Hi!

I'm also developing a project that uses MSI (with Jpgs) and overlay TextBox's that I'm scaling with ScaleTransform.

The application also crashes Internet Explorer, Firefox and Chorme. Silverlight Version is 2.0.31005.0.

If I comment out the ScaleTransform the application does not crash anymore.

Event Viewer:

Faulting application IEXPLORE.EXE, version 7.0.6000.16764, time stamp 0x48f6a2ed, faulting module ntdll.dll, version 6.0.6000.16386, time stamp 0x4549bdf8, exception code 0xc0000029, fault offset 0x000675fc, process id 0xf18, application start time 0x01c95d5ad4de2d60.

Call Stack:

>    ntdll.dll!_RtlUnwind@16() + 0x2c187 bytes
     npctrl.dll!_longjmp() + 0x4e bytes
     npctrl.dll!CWindowsServices::ThrowException() + 0xc bytes
     agcore.dll!jpeg_common_struct::ErrExit() + 0x5a bytes
     agcore.dll!scl_CalcDevHorMetrics() - 0xa1eaf bytes
     agcore.dll!jpeg_marker_reader::read_markers() + 0x64 bytes
     agcore.dll!jinit_memory_mgr() + 0x375c bytes
     agcore.dll!jpeg_consume_input() + 0x4a bytes
     agcore.dll!jpeg_decompress_struct::jpeg_read_header() + 0x19 bytes
     agcore.dll!CJpegLibDecoder::Decode() + 0x54 bytes
     agcore.dll!AbortableJpegDecodeFunction() + 0x1d bytes
     npctrl.dll!CWindowsServices::CallWithExceptionHandler() + 0x39 bytes
     agcore.dll!DecodeJpeg() + 0x83 bytes
     agcore.dll!fnSetTileSurface() + 0x1cd bytes
     agcore.dll!fnSetTileSurface() + 0x4dd bytes
     agcore.dll!AttemptDecode() + 0x32 bytes
     agcore.dll!CSDWorkerThread::Run() + 0xa6 bytes
     agcore.dll!CSDWorkerThread::ThreadStart() + 0xf bytes
     kernel32.dll!@BaseThreadInitThunk@12() + 0xe bytes
     ntdll.dll!__RtlUserThreadStart@8() + 0x23 bytes

Here is the application that causes this crash (but working with a different set of Deep Zoom images ... the crash does not happen with this set :( ... only with the one I have that is >100MB).

Do you have any news or workarounds ?

Thanks,

Tiago Andrade e Silva

Fullsix Portugal

Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Tue, 25 Nov 2008 10:38:24 GMT

My investigations show that application crashed when I used PNG + ScaleTransform or made changes in FontSize for TextBlock but with TranslateTransform all work fine.

Yesterday I have made testing with Label from Silverlight Toolkit and found the same effect.

Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Tue, 18 Nov 2008 14:46:29 GMT

Today I have performed testing MultiScaleImage with JPG and found that it stable and does not crashing, looks like all problems in PNG

Re: RC0: Unexpected iexplore.exe: Silverlight crash

StefanWick — Mon, 17 Nov 2008 15:33:45 GMT

Thanks for the callstack, DVladimir! It looks like you are both hitting the problem.

In your previous post you said it repros with both PNG and JPG. Are you saying it also crashes when using JPG tiles in your MultiScaleImage? If so, does the callstack look the same or different for JPG tiles?

Thanks, Stefan Wick

Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Mon, 17 Nov 2008 08:59:42 GMT

First-chance exception at 0x7c94e39c (ntdll.dll) in iexplore.exe: 0xC0000029: An invalid unwind target was encountered during an unwind operation.

Unhandled exception at 0x7c94e39c (ntdll.dll) in iexplore.exe: 0xC0000029: An invalid unwind target was encountered during an unwind operation.

My call stack:

ntdll.dll!_RtlUnwind@16()  + 0x237f7 bytes	
 	npctrl.dll!_longjmp()  + 0x4e bytes	
 	npctrl.dll!CWindowsServices::ThrowException()  + 0xc bytes	
 	agcore.dll!jpeg_common_struct::ErrExit()  + 0x5a bytes	
 	agcore.dll!scl_CalcDevHorMetrics()  - 0xa1eaf bytes	
 	agcore.dll!jpeg_marker_reader::read_markers()  + 0x64 bytes	
 	agcore.dll!jinit_memory_mgr()  + 0x375c bytes	
 	agcore.dll!jpeg_consume_input()  + 0x4a bytes	
 	agcore.dll!jpeg_decompress_struct::jpeg_read_header()  + 0x19 bytes	
 	agcore.dll!CJpegLibDecoder::Decode()  + 0x54 bytes	
 	agcore.dll!AbortableJpegDecodeFunction()  + 0x1d bytes	
 	npctrl.dll!CWindowsServices::CallWithExceptionHandler()  + 0x39 bytes	
 	agcore.dll!DecodeJpeg()  + 0x83 bytes	
 	agcore.dll!fnSetTileSurface()  + 0x1cd bytes	
 	agcore.dll!fnSetTileSurface()  + 0x4dd bytes	
 	agcore.dll!AttemptDecode()  + 0x32 bytes	
 	agcore.dll!CSDWorkerThread::Run()  + 0xa6 bytes	
 	agcore.dll!CSDWorkerThread::ThreadStart()  + 0xf bytes	
 	kernel32.dll!_BaseThreadStart@8()  + 0x37 bytes

---------------------

All tiles are png, crashed while zooming

Re: Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Dvladimir — Mon, 17 Nov 2008 07:53:43 GMT

I found that my project crashing if I turn on text displaying, I have scaled text - TextBlocks that use RenderTransform (ScaleTransform) to recalculate size and position

My project also contains some vector like markers - Geometry objects

I use png and jpg and haven't found differences

Re: Re: Re: RC0: Unexpected iexplore.exe: Silverlight crash

Jim Lynn — Sun, 16 Nov 2008 00:46:01 GMT

Thanks, Stefan, that's very useful indeed. Although the thought of regenerating 2.5m tiles as jpg doesn't fill me with delight, if it will avoid this issue then it'll be worth it.

Out of interest, is it png in general? We were intending to change from 24bit PNG to 8bit indexed (because our images still look OK like that) to save space but jpg would probably still work.

And part of the app does have scaled text and other items overlaid on the deep zoom image.

Jim.