[Freesurfer] mris_expand problem

Hi,

I'm trying to make a "midgray" surface by inflating the white surface of a subject by 5% using the following command:

mris_expand -thickness rh.white 0.5 rh.midgray.05

I am getting the following output:

using distance as a & of thickness expanding surface rh.white by 0.50% of thickness and writing it to rh.midgray.05 reading thickness... freadFloat: fread failed Input/Output error freadFloat: fread failed Input/Output error freadFloat: fread failed Input/Output error ...

You get the idea. Usually this command takes about 20 minutes or so to expand a surface... when this message comes up (continuous) I've let it run for a couple hours without completing (I haven't let it go to its conclusion because it takes too long).

So, what's going? How can I fix this?

Thanks, Greg Dierksen

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