Well, it's obvious that the OGF file you got from the SDK is incomplete in one way or another (the difference in file size indicates that, too) and therefore the Xray engine cannot utilize it, and crashes. I can't say anything serious about MAYA 2011 process of saving/exporting the work to the SoC or CoP SDK, through the 'object' to 'OGF' process, but strictly speaking on the basis of MAYA 2008 workings, I remember that you should be able to export the work directly as OGF, without needing any commissioning work from the SoC SDK. I remember this, because -as I mentioned earlier- my SDK had stopped working on VISTA at that time, after a short working period, and I was not able to use SDK at all, so all my work directly finished on MAYA as full end results. (I still can't fire SoC SDK on my PC) There could be a problem with plugin and/or the way MAYA 2011 utilizes the resources of XraySDK.
If It was me, I would try to test it on MAYA 2008 once again, at least it is a known and proven system in its workings with the XraySDK. I think the
xray_path file should work on it (maya 2008).
(
$sdk_root$ = false| false| c:\program files\x-ray sdk\level_editor\ comes as default as the first line in the file. And you change the
c:\program files\ part (possibly) to
c:\program files(x86)\ , that's all, without entering any other line. (if your XraySDK is in the program files(x86) folder as it should be in a Win 7 64 system)
The problem may be caused because that MAYA couldn't utilize XraySDK facilities and therefore couldn't process it properly and save it as native OGF file.
Also, a question: have fully uninstalled the MAYA 2008 before installing MAYA 2011? Because on the same PC it's not good to have them both, otherwise some plugins/resources cannot exactly call the correct paths (in MAYA) when they need it.
Weekends are bit hectic for me

as many may have the same experiences, believe me weekdays are easier to work on things, anyway, if I have time I'll test open an OGF file and play around with it (don't need to make anything useful or better) and then save it as OGF, and then get back to you.
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PS: The Microsoft SDK help link is a great link.
