Hi Chris,
The “Computation Messages” window includes cell numbers for 2D-mesh cells that are in error. Maybe it would be helpful in a future revision of HEC-RAS to include in the “Computation Messages” window the easting-northing coodinate of the cell centroid. This could help with recognising the location of a recurring problem after the 2D mesh has been altered by e.g. adding breaklines where the cells renumber making it difficult to readily identify if the error has occurred in the same location.
Thanks, Mario!
P.S. Thank you for taking the time to blog!