Dear all, it seems, that the following error is rather human one. At some point the inputs for the averaging got replicated, which fits perfectly all the symptoms. I apologize for spamming. Pavel On 23 August 2012 09:59, Pavel Hok <[log in to unmask]> wrote: > Dear FSL Experts, > > I encountered a crash in FEAT higher-level analysis after following the > instructions from FSL FAQ No 49. "How do I run higher-level FEAT when some > inputs are first-level and some are higher-level?". > > Most of our subjects had two runs per condition, but some of them did not > complete the second run. To overcome that I ran Fixed Effects Higher-level > FEAT analysis on each subject separately to get their subject mean. Then I > wanted to get simple group average, so according to the FAQ I used > cope#.nii.gz images as input for the next higher-level stats. From the > subjects with two runs, I used the #.gfeat/cope1.feat/stats/cope1.nii.gz, > while for the subjects with only one run the cope1.nii.gz from the original > first-level feat directory. > > After running FLAME1 with simple group mean design, I noticed that > something wrong was with the plots: all the subjects with averaged runs had > the identical values for the best voxel, while those with only one run > differed. When I ran the FLAME1+2, the script crashed with following error > printed out repeatedly: > > > An exception has been thrown > Logic error:- detected by Newmat: index error: requested index = 11 > > MatrixType = Rect # Rows = 10; # Cols = 1 > Trace: Mcmc_Mh::setup; Gsmanager::run. > > > During one of the conditions, all the subjects had both runs completed. In > this case both FLAME1 and FLAME1+2 crashed with the following error: > > An exception has been thrown > Runtime error:- detected by Newmat: matrix is singular > > MatrixType = Crout # Rows = 1; # Cols = 1 > Trace: Crout(lubksb); GeneralSolv; Gsmanager::flame_stage1_onvoxel; > Gsmanager::flame_stage1; Gsmanager::run. > > Any help would be appreciated! > > Thanks! > > Pavel Hok > > -- Pavel Hok ----------------------------------------- -- pavelhok.ic.cz -- webdesign a překlady -- tel.: 731 702 547 -- mail.: [log in to unmask] -----------------------------------------