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Hello, Yes, I double checked in FSLview (and also in AFNI viewer) that both sets of masks overlay the data. I tried gunzipping the nii files for both the masks and the all_skelentonized data see if that was the issue, and still the same error occurs. Michael On Mon, 9 Jan 2012 13:52:36 +0000, Matthew Webster <[log in to unmask]> wrote: >Hi, > Can you double check that the mask overlaps the data ( e.g. just quickly check them in FSLview? ) > >Many Regards > >Matthew > >> Hello, >> >> Thanks for your response. >> >> Unfortunately, I've tried using both mask optoins mean_FA_mask and mean_FA_skeleton.nii.gz, and I still get the same error message. >> >> Anybody else having the same issue or is there another step that I am missing? >> >> Michael >> ________________________________________ >> From: Haitao Ge >> Sent: Saturday, January 07, 2012 8:47 AM >> To: [log in to unmask] >> Subject: Re: [FSL] TBSS exception >> >> Hi Michael >> >> I think you have input the wrong mask. You have input the mean FA skeleton >> instead of mean FA mask. >> >> Haitao >> >> Center for Sectional and Imaging Anatomy >> Shandong University School of Medicine >> 44#, West Wenhua Rd. >> Jinan 250012, Shandong >> P.R.China >> >> -----原始邮件----- >> From: Michael Keaser >> Sent: Saturday, January 07, 2012 5:44 AM >> To: [log in to unmask] >> Subject: Re: [FSL] TBSS exception >> >> Hello, >> >> I too have had the same problem with the error mask is blank. >> >> Here is my command and the output from it: >> >> randomise -i all_FA_skeletonised.nii.gz -o pairedT -d design-glm.mat -t >> design-glm.con -f design-glm.fts -m mean_FA_skeleton.nii.gz -e >> design-glm.grp -T >> randomise options: -i all_FA_skeletonised.nii.gz -o pairedT -d >> design-glm.mat -t design-glm.con -f design-glm.fts -m >> mean_FA_skeleton.nii.gz -e design-glm.grp -T >> Loading Data: ERROR: Program failed >> >> An exception has been thrown >> Data mask is blank. >> >> >> I'm not sure what is going on. Anyone have any ideas? Your help would >> greatly be appreciated. >> >> Thanks, >> >> Michael >>