Dear FreeSurfer Developers,

I have the following problem and would be very happy if you could help me. I have searched the list and did not find the solution to my problem.

I am using FS 5.1 because I have to reanalyze data which I preprocessed in 2014. Back then recon-all and all the group analyses worked fine. I only have the problem now since we have reinstalled FS.

I computed a group analysis using QDEC (the same analysis as I did in 2014), but i get the following errors (/.../ is a place holder for my directory). qdec.table.dat and levels worked all fine before.

ERROR: QdecGlmDesign::WriteFsgdFile: could not open /.../qdec.fsgd for writing

when I press analyze again, this error occurs:

ERROR: QdecProject::CreateGlmDesign: could not generate contrasts

when I analyze again, the analysis starts to run until the following comes up

MatrixWriteTxt(/.../lh-Avg-Intercept-thickness/C.dat) - file open failed

Permission denied mghWrite(/.../lh-Avg-Intercept-thickness/gamma.mgh, -1): could not open file mghWrite(/.../lh-Avg-Intercept-thickness/gammavar.mgh, -1): could not open file mghWrite(/.../lh-Avg-Intercept-thickness/F.mgh, -1): could not open file mghWrite(/.../lh-Avg-Intercept-thickness/cnr.mgh, -1): could not open file mghWrite(/.../lh-Avg-Intercept-thickness/sig.mgh, -1): could not open file maxvox sig=1e+10 F=7409.8 at index 28 0 0 seed=1475358237 Segmentation fault

But in the end, when I press analyze again, qdec runs the glm and the results are the same as when I did the same group analysis back in 2014 (without any error messages then).

Do you have an idea what could be my problem?

Thank you very much in advance,

InLava

uname -a: Linux FreeSurfer 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux