Dear conn experts,

I'm trying to run a between subject analysis in conn. I did all the preprocessing (alignment, smoothing..) directly in conn. However, during finalizing the setup (pressing "done") I keep receiving this error message for the 2nd subject (and some others):
"Error using conn_process (line 554)
No suprathreshold voxels in ROI file D:\\Analysen\14SrestDLM17\c3meana001.nii after erosion (original file contained 7025 suprathreshold voxels)"

Interestingly this message doesnt appear for all subjects, only certain ones (yet too many to eliminate them all from the analysis). Apparently, while creating the eroded file: ec3meana001.nii from c3meana001.nii an error occurs because the eroded file looks destroyed (see enclosed). Only the csf-files (c3meana*.nii) seem to be problematic not the wm-files.
When I disable the erosion procedure (EROSION=0) in conn_process.m then the setup finalization runs through. However, this cant be good solution to the problem.
Do u have any clue where the real problem might lie and what I can do against it?

I'd be grateful for any suggestions!
Best, Maxi