Hi Dan

I was talking about the higher level model. Even if you are only 
interested in the group mean you have to set p one EV in the higher 
level GLM. I remember seeing your original message "can't read 
'fmri(evg2.1)'" when I added a subject and had adjusted the model 
accordingly. I am not sure this is the problem, though, because you said 
the error only occurs with some subjects and not with others. Maybe 
someone else can jump in here.

Your other message (can't set "fmri(reghighres_dof)": can't read 
"map(BBR)": no such element in array) is to be related to the fact that 
the  FSL 5.0.4 uses BBR for B0 unwarping and the older version does not.

Best
Udo


Dan Ames wrote:

>Hi Udo (and any others following this thread)-
>
>Thanks very much for your response! Forgive me for being dense--I'm not quite sure that I follow. Do you mean the level 1 EVs? Each subject has its own unique set of level 1 EVs. This is true for both those subjects who present no problems when added to the level 3 analysis, and for those who produce an error message when added to the level 3 analyses. As best I can tell, there's no problem with these EVs being referenced correctly, since, at the individual subjects level (levels 1 and 2), all analyses are or (at least, appear to be) carried out correctly. My inputs for the problematic third-level analysis are lower-level feat directories that result from these analyses, i.e.,:
>
>/subject/directory.gfeat/copeXX.feat
>
>I have not added any new EVs (e.g., covariates with one value per subject) at the third level, and I'm not comparing any groups--just trying to create a group-level average. That being the case, I'm not sure what EVs you might be suggesting that I double-check--though I do appreciate the suggestion. Sorry--could you clarify?
>
>FYI, my initial post was based on the usage of FSL 5.0.4 and Feat 6.0. If I attempt to run the same analysis using FSL 4.1.9 and Feat 5.9.8, I get a different error message. Moreover, I get this error message even when I include only subjects who produce no error message under the newer version of the software. The full error output (for FSL 4.1.9; Feat 5.9.8) is copied below.
>
>Thanks!
>-Dan
>
>can't set "fmri(reghighres_dof)": can't read "map(BBR)": no such element in array
>can't set "fmri(reghighres_dof)": can't read "map(BBR)": no such element in array
>    while executing
>"set fmri(reghighres_dof) BBR"
>    (file "/mnt/cd/todorov/dan/thirdlevelfeat/thirdlevelfeat_10nov13a.fsf" line 244)
>    invoked from within
>"source ${filename}"
>    (procedure "feat5:load" line 25)
>    invoked from within
>"feat5:load .r 1 /mnt/cd/todorov/dan/thirdlevelfeat/thirdlevelfeat_10nov13a.fsf"
>    ("eval" body line 1)
>    invoked from within
>"eval "$command $outputfile1" "
>    (procedure "feat_file:invoke" line 35)
>    invoked from within
>"feat_file:invoke .wdialog1 a a a :: {feat5:load .r 1}"
>    (command bound to event)
>
>  
>