Originally posted by Feng Zhou:
I tried but failed. The error is 
SPM12: spm_spm (v6842) 15:08:08 - 09/04/2018
========================================================================

SPM12: spm_est_non_sphericity (v6827) 15:08:08 - 09/04/2018
========================================================================
Estimation Failed
Warning: Missing conditions!!! Invalid Contrast
Invalid Contrast
Warning: Missing conditions!!! Invalid Contrast
Invalid Contrast
Warning: Missing conditions!!! Invalid Contrast
Invalid Contrast
PPI Contrasts were not estimated for some reason.

I wonder if PPPI could run with SPM12.

The file spm_est_non_sphericity.m you mentioned is not accessable on the Internet. Would you mind my asking if you could nicely upload the matlab file?

Thanks

Jiahua Xu

My Environment SPM12 v6827 PPPIv 13.1