When you used the debugger to look at the filename did it have the path to the file or just the filename? If it was just the filename I would say the it is looking in the current directory for your file but not finding it. If it contains the full path to the file then I am not sure what could be causing the problem. You might try commenting out the call to optimize the model and see if that helps. Mike Hartman
________________________________ From: [EMAIL PROTECTED] on behalf of Ricko 3D Sent: Tue 8/28/2007 12:41 PM To: [email protected] Subject: Re: [osg-users] osgviewerMFC example crash in 2.1.8 By the way, to clarify when I wrote cOSG::InitSceneGraph ("MFC_OSG.cpp") I meant it was in the MFC_OSG.cpp file, not that it was a parameter passed. I didn't realize how poorly I wrote that until reading the mail again. Sorry. That isn't the issue I'm trying to resolve. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ricko 3D Sent: Tuesday, August 28, 2007 1:19 PM To: [email protected] Subject: [osg-users] osgviewerMFC example crash in 2.1.8 I'm still finding my way around OSG so I wanted to find out if this issue is mine before I continue pulling my hair out. I downloaded and built OSG 2.1.8. I took the code from one of the examples to test, prior to integrating OSG into my app. This is on WinXP SP2 x86 and the dev env is VC++ in VS8. - I created a new project using the code from the "osgViewerMFC" example. - It compiled fine in both release and debug and it launches with no issues. - When I use the open command (from menu or toolbar) and direct it to any test osg file, it crashes with both debug and release builds. - I used the VS debugger to walk through and find the crash in the debug build. - Line 143 of "optimizer.cpp" caused an unhandled exception because node was a NULL point. - I walked up the call stack back into the osgViewerMFC code and found the cause is that mModel in cOSG::InitSceneGraph ("MFC_OSG.cpp") is also NULL. - It turns out osgDB::readNodeFile, earlier in InitSceneGraph, returned a NULL mModel even though the filename passed was valid. To verify it wasn't my settings when creating the example project from scratch I chose another example, specifically osgShadow example. I created a new project added the source, compiled, and both debug and release work perfectly. Is this a known issue with osgViewerMFC? If not any suggestion on what might be causing it? Thanks! Ricko
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