Updating the maxfiles limit in Mountain Lion?

I've run into a situation where the default maxfiles limit of 256 is causing one of my applications to crash. I tried following the how-to in this blog post:
http://www.g9labs.com/2012/06/20/updating-max-file-limit-on-osx-lion/
but have had only limited success. The first issue is that as opposed to the large numbers he cites, when I manually set the maxfiles from the command line my system appears to permit a max value of 512. Does anyone have a similar experience?
While I can set my maxlimit to 512 from the command line, and that does stop the affected app from crashing, I am unable to force this limit to stick after a reboot. I followed the instructions (again, from the above-linked post) and created the /etc/launchctl.conf filewith values set to 512 512 but after reboot the limit still resets to 256. After doing some googling I got the impression this could be set by creating the file /etc/launchd.conf instead, but that just locked up my system so badly that it wouldn't even boot in safe mode and I had to boot from an external backup so I could delete the file.
Can someone please tell me how to configure my system so the 512 limit is the default?
Many thanks in advance!

Well, this may not be the elegant solution but I just updated my ~/.bash_profile to run this line at login:
launchctl limit maxfiles 1024 1024
The 512 limit seems to have been some kind of glitch because after a reboot I could bump it to at least 1024.
Hope this helps someone.

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Updating the maxfiles limit in Mountain Lion?

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