Dear all,

I tried to use VBM2 by Gaser for longitudinal analysis in SPM2.

I was able to create the customised template, segment the images and specify the model.

However, when I tried to estimate it I got the following error in Matlab:

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ane 156/156, block 2/2 : ...done

Temporal non-sphericity (over voxels) : ...REML estimation

Warning: Matrix is close to singular or badly scaled.

Results may be inaccurate. RCOND = 1.049247e-030

(Type "warning off MATLAB:nearlySingularMatrixUMFPACK" to suppress this warning.)

> In c:\documents and settingpc01831\my documents\spm2\spm2\spm_reml.m at line 77

In c:\documents and setting1\my documents\spm2\spm2\toolbox\vbm2\spm_spm.m at line 812

Warning: Matrix is close to singular or badly scaled.

Results may be inaccurate. RCOND = 5.246233e-031.

(Type "warning off MATLAB:nearlySingularMatrix" to suppress this warning.)

> In c:\documents and settings\my documents\spm2\spm2\spm_reml.m at line 82

In c:\documents and settings\my documents\spm2\spm2\toolbox\vbm2\spm_spm.m at line 812

SPM2: spm_spm (v2.66) 13:05:41 - 24/07/2009

========================================================================

Initialising parameters : ...computing??? Index exceeds matrix dimensions.

Error in ==> C:\MATLAB6.5.1\toolbox\matlab\sparfun\spdiags.m

On line 102 ==> a = [a; i i+d(k) B(i+(m>=n)*d(k),k)];

Error in ==> c:\documents and settings\sc01831\my documents\spm2\spm2\toolbox\vbm2\spm_spm.m

On line 420 ==> s = spdiags(1./sqrt(diag(s)),0,nScan,nScan);

Error in ==> c:\documents and settings\s01831\my documents\spm2\spm2\toolbox\vbm2\spm_spm.m

On line 829 ==> SPM = spm_spm(SPM);

??? Error while evaluating uicontrol Callback.

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I read the previous post in https://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=ind06&L=SPM&P=R754340, and tried to estimate the same model in SPM5. However, the suggestion seems not to work in my case as I get a different error message:

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PM5: spm_spm (v$Rev: 649 $) 16:02:30 - 24/07/2009

========================================================================

Initialising parameters : ...computing??? Reference to non-existent field 'dt'.

Error in ==> spm_spm at 494

YNaNrep = spm_type(VY(1).dt(1),'nanrep');

Error in ==> spm_spm at 299

spm_spm(SPM);

??? Error using ==> SPM = spm_spm;

Reference to non-existent field 'dt'.

??? Error while evaluating uicontrol Callback

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Has anyone else come across this?

Regards,

Stefania