Crash on load barrel.nxs

Windows 7 Pro SP1 x64
Dual AMD 6950s in Crossfire
VS 2012 (2010 toolset) with all updates from Windows Update (9/25/2012)
Ogre 1.8.1
PhysX 2.8.4.6
NxOgre 1.6
Critter (latest as of 9/25/2012)

I'm attempting to implement sample 102 by following 102.cpp. I'm actually adding it to my implementation of 101 which worked fine. Note that I'm doing this in a separate project, not one that is dependent on the sample browser.

The following code throws an exception:
mBarrelMesh = mMeshManager->load("ogre://General/barrel.nxs", "barrel");

The exception:
Could not open resource 'ogre://General/barrel.nxs
Reason: Protocol 'ogre' could not be found.

If I don't catch the exception and break on debug, I'm taken to line 82 of NxOgreResourceSystem.cpp:

Resource* ResourceSystem::open(const Path& path, Enums::ResourceAccess resource_access)
{

ResourceProtocol* protocol = mProtocols[path.getProtocolHash()];

if (protocol == 0)
{
StringStream error_message;
error_message << "Could not open resource '" << path.getString() << "\n"
<< "Reason: Protocol '" << path.getProtocol() << "' could not be found.";
NxOgre_ThrowException(IOException, error_message.str(), Classes::_MeshSerialiser); // ========== LINE 82 ==========
return 0;
}

return protocol->open(path, resource_access);
}


If I comment out this line, the cube from 101 loads just fine. If I change the resource name to something that doesn't exist, I get the exact same error. So I don't know if it's a path problem or a protocol problem. I've copy/pasted that line directly from the 102.cpp file from the sample to make sure I didn't have a typo. Sample 102 runs fine in the sample browser. Is there something loaded by the sample browser that is required to make this work?

It looks like you didn't register the 'ogre' protocol. Which allows NxOgre to use the Ogre's resource system;

NxOgre::ResourceSystem::getSingleton()->openProtocol(new Critter::OgreResourceProtocol());

Yes, that was it. Looks like I missed that line when going through 102.cpp. Since I was adding the code to my 101 implementation, I only skimmed the stuff at the top which I thought were the same initial start up steps to create the physics world. Thanks for the help.

No worries.