Dear list members,
A puzzling problem in case you could help :) This seems to be a recurring problem across SPM5/SPM8 and OS platforms but I have not come across any solution.
At second level, I specify a 2x2 full factorial for a number of contrasts. The model is estimated without problem for all contrasts except one, for which I get the error message below. Adding a couple of extra participants makes no difference. Now if I specify the model with a different multiple conditions file ( say File B: where the only thing that differs is e v e n t d u r a t i o n) the specific contrast runs fine.
Now if I run the whole second level analysis with multiple conditions file B, I get some other contrasts for which the model may not be estimated this time (which were estimated fine with the default definition of multiple conditions). Obviously this is not a problem of mask.
In case it helps, I use MAC OS X 10.5 with SPM 8 and matlab R2009a (but I had this problem in the past with SPM5, a LINUX system and an earlier version of Matlab, so it does not seem to be platform specific).
Any insights??
Thanks very much for your help in advance!
Yannis
------------------------------------------------------------------------
Running job #2
------------------------------------------------------------------------
Running 'Model estimation'
SPM8: spm_spm (v3468) 12:45:27 - 29/04/2010
========================================================================
Initialising parameters : ...done
Plane 41/41 , block 1/1 : ...done
Warning: Please check your data: There are no significant voxels.
> In spm_spm at 812
In spm_run_fmri_est at 53
In matlabbatch/private/cfg_run_cm at 29
In cfg_util>local_runcj at 1438
In cfg_util at 766
In cfg_ui>MenuFileRun_Callback at 1211
In gui_mainfcn at 96
In cfg_ui at 53
Failed 'Model estimation'
Reference to non-existent field 'xKXs'.
In file "/spm8/config/spm_run_fmri_est.m" (v3327), function "spm_run_fmri_est" at line 68.
The following modules did not run:
Failed: Model estimation
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