AIR NativeProcess StandardOutput not returning all output

I'm using a simple application that can be run from the command line (on OSX) like so:

oconv inFile.rad > outFile.rad

When run from the command line, the output file looks like this:

#?RADIANCE

oconv inFile.rad

FORMAT=Radiance_octree

  0.57499 0.28749 0.28749 1.55002 inFile.rad

I want to package this app with my AIR 2.0 application and run via Native Process. But when I try to run this file via AIR's nativeProcess, the output of the process gets truncated somehow. All that comes in to StandardOutput is

#?RADIANCE
/Users/daniel/LBNL/COMFEN3_1/radiance/oconv scenario.rad
FORMAT=Radiance_octree

  0.57499

Does anybody know why AIR would truncate the data coming into StandardOutput? I wish I could use the I/O redirect character > in my arguments, but that doesn't seem to work either. I can't do this:

var startupInfo:NativeProcessStartupInfo = new NativeProcessStartupInfo()
var args:Vector.<String> = new Vector.<String>();   
args.push("inFile.rad")
args.push(">")
args.push("outFile.rad")
startupInfo.arguments = args   

or this

var startupInfo:NativeProcessStartupInfo = new NativeProcessStartupInfo()
var args:Vector.<String> = new Vector.<String>();   
args.push("inFile.rad")
args.push(">")
args.push("outFile.rad")
startupInfo.arguments = args

Has anybody experienced the truncation problem? Or, has anybody even gotten a I/O redirection to work via the arguments Vector?

Thanks for any thoughts,

Daniel