Hi Dr. McLaren,

I hope this message finds you well. I need help with the following issue in running the PPPI toolbox in SPM8. I am using Matlab 2023a.

I get the estimation failed error in running the PPPIm. Based on previous posts, I tried running loading the parameters file and running the spm_estimate_PPI.m, which results in an "SPMPPI not found error". I get the same error for the tutorial data and my own data. I have attached a screenshot of the output. Please, let me know if you need more information.

Thank you for your help.

Best,

Kareem Al-Khalil