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Nav get dialog problem - items dimmed on one computer

I have a get-file dialog that sets up a type pop-up using UTIs. It doesn't work on one computer, and does work on another, both running 10.5.1. By "doesn't work", I mean that files with an extension that should associate them with one of these UTIs are dimmed and hence cannot be chosen.

I used the lsregister tool to verify that my UTIs are properly registered. When I do a Finder Get Info on one of the files in question, the Kind string shown there matches one of the items in the type pop-up. The UTIs are declared using UTImportedTypeDeclarations in my Info.plist.

The computer where it does work is an Intel Mac, and the one where it doesn't work is PowerPC.



Here's the code that sets up the dialog:

	NavDialogCreationOptions	opts;
	NavGetDefaultDialogCreationOptions( &opts );
	
	NavDialogRef	navDialog;
	OSStatus	err = NavCreateGetFileDialog( &opts, NULL, NULL, NULL, NULL,
		NULL, &navDialog );
	if (err == noErr)
	{
		CFTypeRef	theUTIs[] = {
				CFSTR("com.frameforge3d.uti.fbx"),
				CFSTR("com.frameforge3d.uti.obj"),
				CFSTR("com.frameforge3d.uti.3ds")
		};
		autoCFArrayRef	utiArray( CFArrayCreate( NULL, theUTIs,
			sizeof(theUTIs)/sizeof(theUTIs[0]),
			&kCFTypeArrayCallBacks ) );
		ThrowIfNULL_( utiArray.get() );
		err = NavDialogSetFilterTypeIdentifiers( navDialog, utiArray.get() );

--
  James W. Walker, Innoventive Software LLC
  <http://www.frameforge3d.com/>
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