First, make sure the computer you're using doesn't have a non-English character 
set installed, because that often interferes with the Qt file I/O.

Second, make sure the spec file you're selecting has write permission.  If 
necessary, copy it to a different filename and make sure it is writeable.

See if the metric file is actually there, even if it didn't get added to the 
spec file.  If the metric file exists, try loading it using File: Open Data 
File: Metric File.

On Jan 28, 2015, at 5:35 PM, Frédéric Roux <> wrote:

> Dear all,
> a while ago I managed to map my functional data with caret
> onto the PALS-B12 template. Unfortunately, I cannot reproduce
> this anymore so I am hoping that somebody may be able to guide
> me to figure out what goes wrong.
> The steps that I take are:
> 1) Attributes -> Map volume(s) to surface. Here I select a .nii file which 
> contains
> a functional volume and the PALS-B12 spec-file from a tutorial data set that I
> downloaded.
> 2) I run the voxel-enclosing algorithm and after the mapping is completed I 
> exit
> caret.
> 3) I load the PALS-B12 spec-file from the tutorial data set. Then I go to
> Display-Control and look under Volume Overlay/Underlay.
> In the past I was able to select metric under primary overlay and could then
> chose the .nii file containing the functional data, but this
> menu point does not appear anymore.
> Any help or suggestions on how to enable the metric option in the Overlay
> would be greatly appreciated.
> Best,
> Fred
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