nrg2iso command lines?

I'm trying to convert an .nrg file to an .iso, but not having much success. I installed nrg2iso, but either (a) it's not working or (b) I'm not entering the correct command lines in Terminal.

Here's what I've tried:

Code:

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cd /foldername
nrg2iso filename.nrg filename.iso

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When I enter that, I get this:

Code:

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Segmentation fault

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What am I doing wrong?

How did you "install" it?

I'd recommend compiling from source

Code:

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sudo apt-get install nrg2iso

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Sorry, I did not realize that one was in the repositories.

What happens if you run it without any arguments?

BTW: It works fine for me......

I tried using Kiso instead and through an extremely complicated set of actions, finally managed to convert.