Thanks for submitting this issue Kristian. I just wanted to add that I originally found this problem on Ubuntu Server 12.04 LTS 64 bit.
I think it was a sort of happy accident that I discovered this after trying your suggestion to help fix my non-working extraction.
The reality is that this is probably happening to a lot of people. I wouldn't think that using the IFX tool and naming extractions with hyphens is terribly uncommon.
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