I have a very weird problem. I have written a c++ application with the SDK that runs fine in debug mode, but in release mode crashes in geniso.dll at address [1101b7b7]. I have gone back and triple checked that all memory is zeroed out and still get the crash. I have compared memory of both a simple 1 file NERO_ISO_ITEM object and a NERO_WRITE_CD object against both debug mode and release mode of the sample application, and everything is the same. Anyone seen any problems like this? Attached is a snipet of my code:

NERO_ISO_ITEM currentItem2;
ZeroMemory ( &currentItem2, sizeof(NERO_ISO_ITEM) );

// Record the name, path...
strncpy( currentItem2.fileName, "Thumbs.db", 9);
strncpy( currentItem2.sourceFilePath, "C:\\Docs\\Thumbs.db", 17 );
currentItem2.isDirectory = FALSE;
currentItem2.isReference = FALSE;
currentItem2.nextItem = NULL;

pIsoTrack = NeroCreateIsoTrackEx( &currentItem2, "Software", NCITEF_CREATE_ISO_FS|NCITEF_USE_JOLIET);

NERO_WRITE_CD neroSessionInfo;

if ( pIsoTrack ) {
// Set the current session information
ZeroMemory ( &neroSessionInfo, sizeof( neroSessionInfo ) );
neroSessionInfo.nwcdArtist = NULL;
neroSessionInfo.nwcdTitle = NULL;
neroSessionInfo.nwcdIsoTrack = pIsoTrack;
neroSessionInfo.nwcdNumTracks = 0; neroSessionInfo.nwcdMediaType = GetDiscType();
neroSessionInfo.nwcdCDExtra = FALSE;
ZeroMemory ( &neroSessionInfo.nwcdReserved, 32 );
neroSessionInfo.nwcdpCDStamp = NULL;

// Verify?
if ( bVerify ) m_dwBurnFlags |= NBF_VERIFY;

// Burn the disc
dwStatus = NeroBurn(*m_pSelectedDriveHandle,
NERO_ISO_AUDIO_CD,
&neroSessionInfo,
m_dwBurnFlags,
0, // Maximum speed
&m_neroProgress);

IDA Pro gives me the error "A new guard page for the stack cannot be created (stack overflow)". Not exactly sure why that is caused, but usually by some huge memory allocation. Any thoughts??

You might want to try changing the compiler's optimization settings from "Maximize speed" to "Minimize size" if you are using VC6. This can be a common problem in Release builds due to bugs in the compiler's optimizer.

Also, why not create NERO_ISO_ITEMs by the means of NeroCreateIsoItem? This API function prepares the structure on your behalf. The one problem I can see is that you are not initializing itemSize field of NERO_ISO_ITEM.

Try making these changes and see if it helps.

Thanks for the suggestions. I am actaully using vc7 and didn't have any optimization turned on. I turned on optimization with minimize speed, but still crash in the same spot.

I guess the sample I gave was a little flawed. In my project, I do as you suggest and use NeroCreateIsoItem. Once the problem arose, I got rid of everything except for the above code. I have since switched back to using NeroCreateIsoItem. With either method of coding, I still crash in the same spot.

In addition, I have a parallel case when trying to burn a DVD. I burn fine in debug mode, but consistently crash in GenUDF.dll at address [0x14027627] when trying to burn a DVD in release mode.

Thanks for your help Alex. Since your suggestion, I have gone over my project settings with a fine-tooth comb and there was a combination of project settings causing memory offset problems >argh<.

hi everybody.
I have a parallel case when burning diffrent folder in four DVD-ROMs,
when one of the DVD-ROW complete burning, the application crash.

the log is:
Faulting application dvr_backup.exe, version 1.0.0.0, stamp 481556df, faulting module geniso.dll, version 7.9.6.0, stamp 4644c2e7, debug? 0, fault address 0x00007edd.

i am sorry for my poor english.
thanks.