Contours on surface plot, nilearn

Hi everyone.
I’m trying to plot the contour of the Harvard-Oxford atlas onto a stat map.
Has the ValueError: Vertices in parcellation do not form region. issue been resolved yet? @jeromedockes I tried your solution with additional parameters in vol_to_surf, but I keep getting the same error. plot_surf_contours won’t accept a <nibabel.nifti1.Nifti1Image> either. Also, I haven’t found any examples of plot_surf_contours usage involving other atlas than Destrieux.