Hello FreeSurfer Developers,

I want to compare the relationship between age and thickness, which is controlled the effect about sex,education and eTIV, so QDEC was used. However I met a problem when I use it, such as picture1.

I get the wrong message, Error in Analyze: command failed: mri_glmfit --y /home/abby/Desktop/qdecyoung/qdec/Untitled/y.mgh --fsgd /home/abby/Desktop/qdecyoung/qdec/Untitled/qdec.fsgd dods --glmdir /home/abby/Desktop/qdecyoung/qdec/Untitled --surf fsaverage lh --label /home/abby/Desktop/qdecyoung/fsaverage/label/lh.aparc.label --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Avg-Intercept-thickness.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Avg-thickness-age-Cor.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Diff-Female-Male-Intercept-thickness.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Diff-Female-Male-Cor-thickness-age.mat.

So I tried to put those to terminal, the feedback is:

gdfRead(): reading /home/abby/Desktop/qdecyoung/qdec/Untitled/qdec.fsgd

INFO: DeMeanFlag keyword not found, DeMeaning will NOT be done.
Continuous Variable Means (all subjects)
0 age 80.3537 2.43637
1 education 12.189 3.6099
2 eTIV 1.33934e+06 242446
Class Means of each Continuous Variable
1 sexFemale 80.0568 11.4773 1265564.4638
2 sexMale 80.6974 13.0132 1424768.7681
INFO: gd2mtx_method is dods
Reading source surface /usr/local/freesurfer/subjects/fsaverage/surf/lh.white
Number of vertices 163842
Number of faces 327680
Total area 65416.984375
AvgVtxArea 0.399269
AvgVtxDist 0.721953
StdVtxDist 0.195470

$Id: mri_glmfit.c,v 1.241.2.4 2016/12/08 22:02:40 zkaufman Exp $
cwd /home/abby/Desktop/qdecyoung/qdec
cmdline mri_glmfit.bin --y /home/abby/Desktop/qdecyoung/qdec/Untitled/y.mgh --fsgd /home/abby/Desktop/qdecyoung/qdec/Untitled/qdec.fsgd dods --glmdir /home/abby/Desktop/qdecyoung/qdec/Untitled --surf fsaverage lh --label /home/abby/Desktop/qdecyoung/fsaverage/label/lh.aparc.label --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Avg-Intercept-thickness.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Avg-thickness-age-Cor.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Diff-Female-Male-Intercept-thickness.mat --C /home/abby/Desktop/qdecyoung/qdec/Untitled/contrasts/lh-Diff-Female-Male-Cor-thickness-age.mat
sysname Linux
hostname abby-virtual-machine
machine x86_64
user abby
FixVertexAreaFlag = 1
UseMaskWithSmoothing 1
OneSampleGroupMean 0
y /home/abby/Desktop/qdecyoung/qdec/Untitled/y.mgh
logyflag 0
usedti 0
FSGD /home/abby/Desktop/qdecyoung/qdec/Untitled/qdec.fsgd
labelmask /home/abby/Desktop/qdecyoung/fsaverage/label/lh.aparc.label
maskinv 0
glmdir /home/abby/Desktop/qdecyoung/qdec/Untitled
IllCondOK 0
ReScaleX 1
DoFFx 0
Creating output directory /home/abby/Desktop/qdecyoung/qdec/Untitled
Loading y from /home/abby/Desktop/qdecyoung/qdec/Untitled/y.mgh
... done reading.
INFO: gd2mtx_method is dods
Saving design matrix to /home/abby/Desktop/qdecyoung/qdec/Untitled/Xg.dat
Computing normalized matrix
Normalized matrix condition is 9294.65
Matrix condition is 1e+08
Found 148151 points in label.
Pruning voxels by thr: 1.175494e-38
Found 139197 voxels in mask
Saving mask to /home/abby/Desktop/qdecyoung/qdec/Untitled/mask.mgh
Reshaping mriglm->mask...
search space = 69257.619818
DOF = 156
Starting fit and test
Fit completed in 0.338183 minutes
Computing spatial AR1 on surface
Residual: ar1mn=0.995542, ar1std=0.000996, gstd=6.054132, fwhm=14.256391
Writing results
lh-Avg-Intercept-thickness
maxvox sig=10.0394 F=48.3686 at index 13210 0 0 seed=1563457975
MatrixMultiplyD(): m2 is null
break matrix.c:415

No such file or directory

When same operations were did with other files, Qdec running normally. I don't know why. Please help me. Thank you

Best regards