I think that there must be a problem with your FSL install. I hate to 
pass the buck, but did you contact the FSL list?
doug

On 07/13/2014 01:36 PM, Alan Lee wrote:
> Hi Doug,
>
> When I run the following:
> /usr/lib/fsl/5.0/bin/bet2
>
> it gives me the following error:
> bet2: error while loading shared libraries: libfslvtkio.so: cannot 
> open shared object file: No such file or directory
>
> When I run
> fsl
>
> it says
> fsl: Command not found.
>
> However, the command
> fslview
>
> works and brings up a FSLviewer GUI, though it's the version of 4.0.1 
> (not 5.0).
>
> I tried typing "fsl" then hit the TAB key, and it seems that there're 
> a lot of available commands that need to be run as
> fsl5.0-___
>
> e.g., when I run
> fsl5.0-bet2
>
> It shows the help for the bet2 function (because I didn't run it with 
> the correct arguments, I suppose):
>
> Part of FSL (build 506)
> BET (Brain Extraction Tool) v2.1 - FMRIB Analysis Group, Oxford
>
> Usage:
> bet2 <input_fileroot> <output_fileroot> [options]
>
> Optional arguments (You may optionally specify one or more of):
> -o,--outlinegenerate brain surface outline overlaid onto original image
> -m,--maskgenerate binary brain mask
> -s,--skullgenerate approximate skull image
> -n,--nooutputdon't generate segmented brain image output
> -f <f>fractional intensity threshold (0->1); default=0.5; smaller 
> values give larger brain outline estimates
> -g <g>vertical gradient in fractional intensity threshold (-1->1); 
> default=0; positive values give larger brain outline at bottom, 
> smaller at top
> -r,--radius=<r>head radius (mm not voxels); initial surface sphere is 
> set to half of this
> -w,--smooth=<r>smoothness factor; default=1; values smaller than 1 
> produce more detailed brain surface, values larger than one produce 
> smoother, less detailed surface
> -c <x y z>centre-of-gravity (voxels not mm) of initial mesh surface.
> -t,--threshold-apply thresholding to segmented brain image and mask
> -e,--meshgenerates brain surface as mesh in vtk format
> -v,--verboseswitch on diagnostic messages
> -h,--helpdisplays this help, then exits
>
> All these make me think that there's something wrong with my FSL 
> installation. Should I uninstall it and reinstall it again? Any advice 
> on this?
>
> Thanks,
> Alan
>
>
>
>
>
> --
> Alan Lee
> sites.google.com/site/alanlflee/ <http://sites.google.com/site/alanlflee/>
>
>
> On Mon, Jul 7, 2014 at 5:40 PM, Douglas N Greve 
> <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote:
>
>     If you just run bet2 (ie, /usr/lib/fsl/5.0/bin/bet2) outside of FS, do
>     you still get the error? Can you use any of the other FSL commands?
>
>
>     On 07/04/2014 06:26 AM, Alan Lee wrote:
>     > Hello freesurferers,
>     >
>     > I ran this command (33333 is my subject name):
>     >
>     > selxavg3-sess -a Retinotopy.33333.lh -s 33333
>     >
>     > and got this error message:
>     >
>     > # ---------- Using FSL's BET to Extract Brain------------------ #
>     > /usr/local/freesurfer/subjects/Retinotopy/33333/Retinotopy
>     > bet.fsl /tmp/mkbrainmask_14781/in.nii
>     /tmp/mkbrainmask_14781/brain -m
>     > -f 0.1
>     > /usr/lib/fsl/5.0/bin/bet2: error while loading shared libraries:
>     > libfslvtkio.so: cannot open shared object file: No such file or
>     directory
>     >
>     >
>     > It seems that something is wrong with the file libfslvtkio.so, or
>     > perhaps some path problem (I've manually set $FSLDIR to
>     > /usr/lib/fsl/5.0/). Any feedback would be greatly appreciated.
>     >
>     > Below are the versions of software I'm using:
>     > Linux debian 3.2.0-4-486 #1 Debian 3.2.57-3+deb7u1 i686
>     GNU/Linux (run
>     > in virtualbox with a Windows 8 Host)
>     > FSL 5.0.6
>     > freesurfer-Linux-centos4-stable-pub-v5.3.0
>     >
>     >
>     > Many thanks,
>     > Alan
>     >
>     >
>     >
>     > --
>     > Alan Lee
>     > sites.google.com/site/alanlflee/
>     <http://sites.google.com/site/alanlflee/>
>     <http://sites.google.com/site/alanlflee/>
>     >
>     >
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>
>     --
>     Douglas N. Greve, Ph.D.
>     MGH-NMR Center
>     gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
>     Phone Number: 617-724-2358 <tel:617-724-2358>
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>
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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
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