Hello AFNI Rock Stars! I'm back and better than ever on the Message Board.

I've got a question about resampling, as part of my endeavor to run AlphaSim on my control group results.
On Gang's webpage, he suggested resampling both the Group Mask and the Standard Deviation to original voxel size. But, since I blurred my maps by 6mm, I am converting them to 6 x 6 x 6. I used the following scripts to achieve both steps:

For Group Mask:
3dresample -dxyz 6 6 6 -rmode 'NN' -inset Full_Mask_Controls+tlrc -prefix ControlsMask

For Standard Deviation:
3dresample -dxyz 6 6 6 -rmode 'NN' -inset StdDev+tlrc -prefix StdDev_Resampled

Now my problem is that I can't seem to obtain the spatial correlation with 3dFWHM. When I ran this script:

3dFWHMx -dset StdDev_Resampled+tlrc -mask Full_Mask_Controls+tlrc -out StdDev_fwhm.txt

I got this error message:
"** FATAL ERROR: -mask dataset grid doesn't match input dataset"

HUH??? Help please! Thank you!

Yours in familywise solidarity,
Whitney